test: Do not use a .ts extension for snapshot

[Artur-]

Prevents 'nx graph' from parsing the TS file and deducing there is a dependency on generator-plugin-client

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.30%. Comparing base (5b63b90) to head (e936988).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2797   +/-   ##
=======================================
  Coverage   92.30%   92.30%           
=======================================
  Files          81       81           
  Lines        2677     2677           
  Branches      686      686           
=======================================
  Hits         2471     2471           
  Misses        156      156           
  Partials       50       50           

Flag	Coverage Δ
unittests	92.30% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[sonarcloud]

Quality Gate failed

Failed conditions
33.3% Duplication on New Code (required ≤ 3%)

See analysis details on SonarCloud