[HOLD Auth #20622] fix: correctly resolve mention whispers created during message edits

[deetergp]

Explanation of Change

When a message is edited to add a new @mention, the backend creates a second ACTIONABLEMENTIONWHISPER with a random ID (not following the parentID+1 convention used for whispers created on initial send). When that parent comment is deleted, the backend cascades the deletion to all linked whispers.

The backend (Auth fix for issue #86084) now stores the parent comment's reportActionID in the whisper's originalMessage JSON. This PR updates the frontend to use that field.

Without this fix: isResolvedActionableWhisper uses offset arithmetic (whisperID - 1) to find the parent of a mention whisper. For edit-created whispers with random IDs, this points to the wrong action. If that wrong action is not deleted, the function returns false and the whisper stays visible even after the backend deleted it.

With this fix: When originalMessage.reportActionID is present, use it directly to find the parent. Fall back to offset arithmetic for legacy whispers that predate this field.

Fixed Issues

$ #86084

Tests

1. Login to staging
2. Go to a workspace chat
3. Mention a non-member user and send the message (Concierge whisper appears)
4. Edit the message to add a second non-member mention (second Concierge whisper appears)
5. Delete the original message
6. Verify both Concierge whispers are removed

Offline tests

Same as tests.

QA Steps

Same as tests.

• Verify that no errors appear in the JS console

PR Author Checklist

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Screenshots/Videos

Android: Native

Android: mWeb Chrome

iOS: Native

iOS: mWeb Safari

MacOS: Chrome / Safari

🤖 Generated with Claude Code

[melvin-bot]

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[codecov]

Codecov Report

✅ Changes either increased or maintained existing code coverage, great job!

Files with missing lines	Coverage Δ
src/libs/ReportActionsUtils.ts	55.03% <100.00%> (ø)
... and 230 files with indirect coverage changes

[chatgpt-codex-connector]

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[Krishna2323]

Will start reviewing shortly.

[deetergp]

You should hold off @Krishna2323 as it requires a yet-to-be-approved backend change in order to work.