Siri Sudheeksha fix(lesson-list): Lesson List filter not updating results

[sirisudheeksha]

Description

Lesson List “Filter” change is not updating results. Changing options like “This Year/Month/Week” left the list unchanged or inconsistent. This PR ensures filter changes update state, refresh the dataset and resolves minor tag removal issues.

Related PRS (if any):

#3107
…

Main changes explained:

• Update file LessonListForm.jsx:
• Sync filter/sort/tags with URL query for reload/shareable state.
• Add loading indicator and empty-result message.
• Ensure filter change triggers re-computation.
• Fix tag removal to remove by value reliably.
• Update file LessonCard.jsx:
• Safe HTML parsing using optional chaining to prevent errors.
• Update file Lessons.jsx:
• Minor cleanup to deletion handler; keeps filtered list consistent after delete.

…

How to test:

1. check into current branch
2. do npm install and ... to run this PR locally
3. Clear site data/cache!!!
4. log in as admin user
5. go to http://localhost:3000/bmdashboard/lessonlist
6. Verify Change Filter (This Year/Month/Week): list refreshes; loading appears briefly; results reflect selection.
7. Add/remove Tags: removing tags updates results.
8. Change Sort: order updates; Filter selection remains.
9. Reload the page: filter/sort/tags restored from URL.
10. When no results: “No lessons match this filter.” shown.

Screenshots or videos of changes:

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[sonarqubecloud]

Quality Gate failed

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B Maintainability Rating on New Code (required ≥ A)

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