fix: copilot agents renaming - 5.9 prerelease

[anchenyi]

https://msazure.visualstudio.com/Microsoft%20Teams%20Extensibility/_workitems/edit/29627957/?view=edit
https://msazure.visualstudio.com/Microsoft%20Teams%20Extensibility/_workitems/edit/29597112

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.70%. Comparing base (36df05c) to head (f5c09e2).
Report is 2 commits behind head on hotfix/prerelease-20240926.

Additional details and impacted files

@@                      Coverage Diff                       @@
##           hotfix/prerelease-20240926   #12474      +/-   ##
==============================================================
+ Coverage                       89.65%   89.70%   +0.04%     
==============================================================
  Files                             582      583       +1     
  Lines                           34494    34635     +141     
  Branches                         6708     6758      +50     
==============================================================
+ Hits                            30927    31068     +141     
  Misses                           1582     1582              
  Partials                         1985     1985              

Files with missing lines	Coverage Δ
packages/fx-core/src/common/projectTypeChecker.ts	90.24% <100.00%> (+0.37%)	⬆️
.../src/component/driver/teamsApp/createAppPackage.ts	95.47% <100.00%> (+2.27%)	⬆️
...t/driver/teamsApp/utils/CopilotGptManifestUtils.ts	95.90% <100.00%> (+0.90%)	⬆️
...c/component/driver/teamsApp/utils/ManifestUtils.ts	81.55% <100.00%> (+1.87%)	⬆️
.../fx-core/src/component/driver/teamsApp/validate.ts	87.78% <100.00%> (+1.52%)	⬆️
packages/fx-core/src/core/FxCore.ts	89.85% <100.00%> (+0.02%)	⬆️
packages/manifest/src/manifest.ts	100.00% <ø> (ø)
...kages/vscode-extension/src/utils/autoOpenHelper.ts	96.80% <100.00%> (+0.03%)	⬆️

... and 16 files with indirect coverage changes