revert: Sidebar unread counts for filters (CW-7262) (#14769)

## Description

Reverts [#14726](https://github.com/chatwoot/chatwoot/pull/14726)
(\"feat: Add sidebar unread counts for filters (CW-7262)\"), which
shipped in 4.15.0.

After 4.15.0 rolled out to prod the unread-counts-for-filters code path
caused a cascading incident:

- `Counter#ensure_filters_cache!` fires on every `/unread_counts/index`
and `update_last_seen` request.
- On cache miss it calls `Builder#build_filters_for!`, which:
- invokes `store.clear_user_filters!` -> `delete_matching` -> a Redis
`SCAN_each` over a per-user pattern keyspace, and
- runs 4 fresh SQL passes per user (mentions, participating, unattended,
and per-folder `Conversations::FilterService` queries).
- Threads blocked in the SCAN held their DB connections, the connection
pool exhausted, Sidekiq jobs were discarded with
`ActiveJob::DeserializationError: could not obtain a connection from the
pool`, and the enqueued queue blew past 200K.


Related:
[CW-7262](https://linear.app/chatwoot/issue/CW-7262/unread-counts-for-filters-folders)

## Type of change

- [x] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality not to work as expected)
- [ ] This change requires a documentation update

## How Has This Been Tested?


## Checklist:

- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my code
- [ ] I have commented on my code, particularly in hard-to-understand
areas
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [x] I have added tests that prove my fix is effective or that my
feature works
- [x] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream
modules

app/javascript/dashboard/store/modules/conversationUnreadCounts.js

@@ -6,10 +6,6 @@ export const state = {
   inboxes: {},
   labels: {},
   teams: {},
-  mentionsCount: 0,
-  participatingCount: 0,
-  unattendedCount: 0,
-  folders: {},
 };
 
 const normalizeCount = count => {
@@ -41,18 +37,6 @@ export const getters = {
   getTeamUnreadCount: $state => teamId => {
     return $state.teams[String(teamId)] || 0;
   },
-  getMentionsUnreadCount($state) {
-    return $state.mentionsCount;
-  },
-  getParticipatingUnreadCount($state) {
-    return $state.participatingCount;
-  },
-  getUnattendedUnreadCount($state) {
-    return $state.unattendedCount;
-  },
-  getFolderUnreadCount: $state => folderId => {
-    return $state.folders[String(folderId)] || 0;
-  },
   getInboxUnreadCounts($state) {
     return $state.inboxes;
   },
@@ -62,9 +46,6 @@ export const getters = {
   getTeamUnreadCounts($state) {
     return $state.teams;
   },
-  getFolderUnreadCounts($state) {
-    return $state.folders;
-  },
 };
 
 export const actions = {
@@ -87,10 +68,6 @@ export const mutations = {
     $state.inboxes = normalizeCounts(payload.inboxes);
     $state.labels = normalizeCounts(payload.labels);
     $state.teams = normalizeCounts(payload.teams);
-    $state.mentionsCount = normalizeCount(payload.mentions_count);
-    $state.participatingCount = normalizeCount(payload.participating_count);
-    $state.unattendedCount = normalizeCount(payload.unattended_count);
-    $state.folders = normalizeCounts(payload.folders);
   },
 };
 

app/javascript/dashboard/store/modules/specs/conversationUnreadCounts/getters.spec.js

@@ -57,32 +57,10 @@ describe('#getters', () => {
       inboxes: { 1: 2 },
       labels: { 3: 4 },
       teams: { 5: 6 },
-      folders: { 8: 9 },
     };
 
     expect(getters.getInboxUnreadCounts(state)).toEqual({ 1: 2 });
     expect(getters.getLabelUnreadCounts(state)).toEqual({ 3: 4 });
     expect(getters.getTeamUnreadCounts(state)).toEqual({ 5: 6 });
-    expect(getters.getFolderUnreadCounts(state)).toEqual({ 8: 9 });
-  });
-
-  it('returns mentions, participating, unattended, and folder unread counts', () => {
-    const state = {
-      allCount: 0,
-      inboxes: {},
-      labels: {},
-      teams: {},
-      mentionsCount: 3,
-      participatingCount: 4,
-      unattendedCount: 5,
-      folders: { 7: 8 },
-    };
-
-    expect(getters.getMentionsUnreadCount(state)).toBe(3);
-    expect(getters.getParticipatingUnreadCount(state)).toBe(4);
-    expect(getters.getUnattendedUnreadCount(state)).toBe(5);
-    expect(getters.getFolderUnreadCount(state)(7)).toBe(8);
-    expect(getters.getFolderUnreadCount(state)('7')).toBe(8);
-    expect(getters.getFolderUnreadCount(state)(8)).toBe(0);
   });
 });

app/javascript/dashboard/store/modules/specs/conversationUnreadCounts/mutations.spec.js

@@ -21,13 +21,6 @@ describe('#mutations', () => {
           6: '7',
           7: 0,
         },
-        mentions_count: '8',
-        participating_count: 9,
-        unattended_count: '10',
-        folders: {
-          11: '12',
-          12: 0,
-        },
       });
 
       expect(state).toEqual({
@@ -35,10 +28,6 @@ describe('#mutations', () => {
         inboxes: { 1: 2 },
         labels: { 4: 5 },
         teams: { 6: 7 },
-        mentionsCount: 8,
-        participatingCount: 9,
-        unattendedCount: 10,
-        folders: { 11: 12 },
       });
     });
 
@@ -48,10 +37,6 @@ describe('#mutations', () => {
         inboxes: { 1: 2 },
         labels: { 4: 5 },
         teams: { 6: 7 },
-        mentionsCount: 8,
-        participatingCount: 9,
-        unattendedCount: 10,
-        folders: { 10: 11 },
       };
 
       mutations[types.SET_CONVERSATION_UNREAD_COUNTS](state, {});
@@ -61,10 +46,6 @@ describe('#mutations', () => {
         inboxes: {},
         labels: {},
         teams: {},
-        mentionsCount: 0,
-        participatingCount: 0,
-        unattendedCount: 0,
-        folders: {},
       });
     });