[Feature]: Enable PowerApps MDA Input controls for Custom Pages with Test Engine Support

[v-raghulraja]

Pull Request Template

Description

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.

Checklist

• The code change is covered by unit tests. I have added tests that prove my fix is effective or that my feature works
• I have performed end-to-end test locally.
• New and existing unit tests pass locally with my changes
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I used clear names for everything
• I have performed a self-review of my own code