Fix: Alt + Arrow Key Shortcuts Not Functioning in Message Navigation

[KrishnaShuk]

This PR addresses the issue where Alt + Left Arrow, Alt + Right Arrow, Alt + Up Arrow, and Alt + Down Arrow shortcuts were not functioning as expected for message navigation.

Acceptance Criteria fulfillment

• [x] Ensured that the event listeners correctly capture Alt + Arrow Key inputs.
• [x] Tested across different browsers to confirm the fix.

Fixes #989

Video/Screenshots

Screencast from 2025-02-15 19-43-29.webm

PR Test Details

Note: The PR will be ready for live testing at https://rocketchat.github.io/EmbeddedChat/pulls/pr-<pr_number> after approval. Contributors are requested to replace <pr_number> with the actual PR number.

[Spiral-Memory]

@KrishnaShuk Please use 'Prettier' formatter to pass the lint test

[KrishnaShuk]

@Spiral-Memory I have made the required changes.

[KrishnaShuk]

Hi! The PR has been approved, but it's currently blocked by pending workflow approvals. Could you please approve the workflows? Thanks!

[Spiral-Memory]

Lint check is still failed

[KrishnaShuk]

I have made some changes in my latest commit and this passes the lint test.