fix(cc-widgets): Enable or disable Conference feature based on prop

[rsarika]

COMPLETES #< INSERT LINK TO ISSUE >

This pull request addresses

hiding conference feaeture(buttons) based on feature flag prop passed to call control and call control cad widgets.

by making the following changes

Added additional condition in task-utils to honour the prop passed as part of call control and call control cad widgets.

added checkbox in sample app to quickly toggle the feature.

Change Type

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update
• Tooling change
• Internal code refactor

The following scenarios were tested

• The testing is done with the amplify link
  < ENUMERATE TESTS PERFORMED, WHETHER MANUAL OR AUTOMATED >

The GAI Coding Policy And Copyright Annotation Best Practices

• GAI was not used (or, no additional notation is required)
• Code was generated entirely by GAI
• GAI was used to create a draft that was subsequently customized or modified
• Coder created a draft manually that was non-substantively modified by GAI (e.g., refactoring was performed by GAI on manually written code)
• Tool used for AI assistance (GitHub Copilot / Other - cursor)
  • Github Copilot
  • Other - cursor
• This PR is related to
  • Feature
  • Defect fix
  • Tech Debt
  • Automation

Checklist before merging

• I have not skipped any automated checks
• All existing and new tests passed
• I have updated the testing document

---

[rsarika]

will reopen the same pr again to generate amplify