fix: return correct manifest path for MSTeams Samples

[yiqing-zhao]

https://msazure.visualstudio.com/Microsoft%20Teams%20Extensibility/_workitems/edit/29888446

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.77%. Comparing base (f0d320c) to head (5ab8753).
Report is 1 commits behind head on dev.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev   #12527   +/-   ##
=======================================
  Coverage   89.77%   89.77%           
=======================================
  Files         580      580           
  Lines       34187    34189    +2     
  Branches     6627     6678   +51     
=======================================
+ Hits        30690    30692    +2     
  Misses       1551     1551           
  Partials     1946     1946           

Files with missing lines	Coverage Δ
...c/component/driver/teamsApp/utils/ManifestUtils.ts	81.55% <100.00%> (+0.18%)	⬆️