Sayali: add Expand All/Truncate All button to Team Member Tasks header

[sayali-2308]

# Description Implements #[TaskNumber] (Priority Medium)

Related PRs:

None

Main changes explained:

• Updated TeamMemberTasks.jsx to add expandAll state and "Expand All/Truncate All" toggle button next to the "Team Member Tasks" heading
• Updated TeamMemberTask.jsx to accept expandAll prop and use it to override individual row truncation state
• Fixed skeleton loading issue when usersWithTasks is empty by setting selectionsLoaded to true immediately

How to test:

1. Check out branch Sayali-Expand-All-Tasks-Button
2. npm install && npm run start:local
3. Clear cache, log in as admin
4. Navigate to Dashboard → Tasks tab
5. Verify "Expand All" button appears below "Team Member Tasks" heading
6. Click "Expand All" — all task lists with more than 6 tasks should expand and button should change to "Truncate All"
7. Click "Truncate All" — all task lists should collapse back and button reverts to "Expand All"
8. Verify dark mode works

Screenshots:

# ExpnadAll # TruncateAll

Note:

Task number threshold for truncation remains at 6 tasks (unchanged).

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[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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