fix: vrt test cases of popover

[preetibansalui]

Closes #18180

Change story id with theme in VRT test case

Testing / Reviewing

It should pass all CI checks

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.36%. Comparing base (29d0f18) to head (d9cad7d).

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #18181   +/-   ##
=======================================
  Coverage   83.36%   83.36%           
=======================================
  Files         404      404           
  Lines       14344    14344           
  Branches     4650     4596   -54     
=======================================
  Hits        11958    11958           
- Misses       2224     2225    +1     
+ Partials      162      161    -1     

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