[Condense] Move condense button out of expanded task menu

[canrobins13]

Description

Moves the condense context button out of the expanded task menu so that you can click it without having to open the menu up.
Requested by @hannesrudolph

Test Procedure

Tried clicking the button and it works

Type of Change

• 🐛 Bug Fix: Non-breaking change that fixes an issue.
• ✨ New Feature: Non-breaking change that adds functionality.
• 💥 Breaking Change: Fix or feature that would cause existing functionality to not work as expected.
• ♻️ Refactor: Code change that neither fixes a bug nor adds a feature.
• 💅 Style: Changes that do not affect the meaning of the code (white-space, formatting, etc.).
• 📚 Documentation: Updates to documentation files.
• ⚙️ Build/CI: Changes to the build process or CI configuration.
• 🧹 Chore: Other changes that don't modify src or test files.

Pre-Submission Checklist

• Issue Linked: This PR is linked to an approved GitHub Issue (see "Related GitHub Issue" above).
• Scope: My changes are focused on the linked issue (one major feature/fix per PR).
• Self-Review: I have performed a thorough self-review of my code.
• Code Quality:
  • My code adheres to the project's style guidelines.
  • There are no new linting errors or warnings (npm run lint).
  • All debug code (e.g., console.log) has been removed.
• Testing:
  • New and/or updated tests have been added to cover my changes.
  • All tests pass locally (npm test).
  • The application builds successfully with my changes.
• Branch Hygiene: My branch is up-to-date (rebased) with the main branch.
• Documentation Impact: I have considered if my changes require documentation updates (see "Documentation Updates" section below).
• Changeset: A changeset has been created using npm run changeset if this PR includes user-facing changes or dependency updates.
• Contribution Guidelines: I have read and agree to the Contributor Guidelines.

Screenshots / Videos

Documentation Updates

• Yes, documentation updates are required.

Update docs that mention the manual context condense button

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Important

Refactor UI to move condense button from TaskActions to TaskHeader, improving accessibility and updating tests accordingly.

• UI Changes:
  • Move condense button from TaskActions to TaskHeader for easier access without expanding the task menu.
  • Update TaskHeader to include condense button in collapsed state.
• Code Changes:
  • Remove handleCondenseContext prop from TaskActions in TaskActions.tsx.
  • Add IconButton for condense action in TaskHeader.tsx.
• Testing:
  • Update TaskHeader.test.tsx to test new condense button location and behavior.
  • Add tests for button click and disabled state.

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