docs: add missing comment history panel actions

[Aamod007]

Summary

This PR updates the Kanvas designer documentation to reflect the latest capabilities available within the comment history panel, ensuring the docs accurately mirror the product's features.

Changes Included

• index.md (Comments section):
  • Added detailed descriptions for managing threads directly from the history panel, including resolving comments, muting notifications, and deleting comments.
  • Added a best-practice note clarifying that resolving a comment is generally preferred over deleting it, as it preserves historical context.
  • Updated the specific sections on resolving, muting, and deleting to explicitly mention that these actions can also be accessed via the comment history panel.
  • Fixed a minor spelling typo (contructive -> constructive).
• feature_data.json:
  • Appended "Delete individual comments" to the feature list under the Design Review Notifications configuration to reflect the complete set of capabilities.

Screenshot

Issue Linked

Closes #549

[gemini-code-assist]

Code Review

This pull request updates the Kanvas designer comments documentation and feature data to detail new capabilities, such as managing individual comment threads, muting notifications, and deleting individual comments from the comment history panel. It also fixes a typo ('contructive' to 'constructive'). The review feedback suggests improving terminology consistency by referring to resolving 'comment threads' rather than 'individual comments' and clarifying that deleting individual comments removes the specific comments rather than the entire thread.

Important

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[NSTKrishna]

@Aamod007 There is one commit incorrectly signed off. fix it

[Aamod007]

@Aamod007 There is one commit incorrectly signed off. fix it

@NSTKrishna Fixed! All 3 commits have been rebased and signed off. The DCO check should be passing now!

[Aamod007]

@NSTKrishna can u have a look at this PR too,PR #1100