Fix Regression of Role Assignment Deletion Logic

[Jefajers]

Overview/Summary

This PR fixes the erroneous handling of Microsoft.Authorization/roleAssignments deletions that was introduced in AzOps 2.6.5 causing validate and push to fail when the roleAssignments had been removed out of bound.

This fixes #921.

This PR fixes/adds/changes/removes

1. Changes Remove-AzOpsDeployment.ps1

Breaking Changes

N/A

Testing Evidence

With new logic validate does not fail:

With new logic push does not fail:

As part of this Pull Request I have

• Checked for duplicate Pull Requests
• Associated it with relevant issues, for tracking and closure.
• Ensured my code/branch is up-to-date with the latest changes in the main branch
• Performed testing and provided evidence.
• Updated relevant and associated documentation.