Fix: Vertical overflows in Dashbot Home and Chat menus (#982)

[Akarshkushwaha]

PR Description

This PR fixes vertical overflow issues in the Dashbot Home Page and Chat Page task list by wrapping the content in a SingleChildScrollView. This ensures the UI remains accessible and scrollable on smaller screens or when the window is resized.

Related Issues

Closes #982

Checklist

• I have gone through the contributing guide
• I have updated my branch and synced it with project main branch before making this PR
• I am using the latest Flutter stable branch (run flutter upgrade and verify)
• I have run the tests (flutter test) and all tests are passing

Added/updated tests?

We encourage you to add relevant test cases

• Yes
• No, and this is why: This is a UI-only fix (adding scroll functionality) which was verified manually. Video evidence of the fix is attached to Issue [UI] Dashbot home menu overflows vertically on small window heights #982.

OS on which you have developed and tested the feature?

• Windows
• macOS
• Linux