Updates dashboard, widget, and backend locale files with the latest
translation sync from Crowdin.
## Closes
N/A
## What changed
- Refreshes translated dashboard JSON locale files across supported
languages.
- Adds the latest backend Help Center/public portal locale strings.
- Keeps the branch current with `develop` and resolves the `ar`, `fr`,
and `pt_BR` locale conflicts.
## Validation
- Parsed all changed JSON and YAML locale files successfully.
- Checked for leftover merge conflict markers.
- Ran `git diff --check`.
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Co-authored-by: Sojan Jose <sojan@pepalo.com>
This reverts #14610 so conversation unread counts are again controlled
by the `conversation_unread_counts` feature flag across the API,
ActionCable broadcasts, notifier/listener paths, and dashboard sidebar
fetching.
## Closes
- None
## What changed
- Restores feature-flag checks for conversation unread count reads and
broadcasts.
- Restores the dashboard feature flag constant and sidebar/store
behavior for disabled unread counts.
- Restores the specs that cover disabled-feature behavior.
## How to test
- In an account with `conversation_unread_counts` enabled, verify
sidebar unread counts are fetched and updated in real time.
- Disable `conversation_unread_counts` for the account and verify unread
count requests/broadcasts are skipped.
Translate missing Simplified Chinese live-chat widget availability and
reply-time strings so visitors using `zh_CN` no longer see English
fallbacks in offline and pre-chat states.
## Closes
N/A
## How to test
- Open the widget with `Widget Locale = 中文 (zh_CN)` and set the team
offline. The availability card should stay in Chinese.
- Configure working hours so the widget shows minute, hour, tomorrow,
and day-specific return states. The `{time}`, `{n}`, and `{day}`
placeholders should render correctly.
## What changed
- Translated missing `THUMBNAIL.AUTHOR.NOT_AVAILABLE`,
`TEAM_AVAILABILITY.BACK_AS_SOON_AS_POSSIBLE`, and `REPLY_TIME.*` strings
in `app/javascript/widget/i18n/locale/zh_CN.json`.
- Kept the scope limited to Simplified Chinese.
Co-authored-by: Sojan Jose <sojan@pepalo.com>
Captain