Improve marketplace tests performance

[remidej]

What does it do?

This is a followup to #14935 to apply the feedback from @madhurisandbhor

It improves performance by using getByTestId instead of getByRole wherever possible.

	Before	After
index.test.js	5.4s	5.4s
providers.test.js	34.9	30.5s
plugins.test.js	66.2s	58.1s
Total	66.8s	59.4s

[codecov]

Codecov Report

Base: 49.80% // Head: 59.79% // Increases project coverage by +9.99% 🎉

Coverage data is based on head (a63ee30) compared to base (d8cecee).
Patch coverage: 97.50% of modified lines in pull request are covered.

Additional details and impacted files

@@                      Coverage Diff                      @@
##           feature/market-pagination   #15006      +/-   ##
=============================================================
+ Coverage                      49.80%   59.79%   +9.99%     
=============================================================
  Files                            290     1340    +1050     
  Lines                          10184    32689   +22505     
  Branches                        2252     6186    +3934     
=============================================================
+ Hits                            5072    19546   +14474     
- Misses                          4214    11296    +7082     
- Partials                         898     1847     +949     

Flag	Coverage Δ
front	64.31% <97.50%> (?)
unit	49.80% <ø> (ø)

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

Impacted Files	Coverage Δ
...n/src/pages/MarketplacePage/tests/mocks/plugins.js	100.00% <ø> (ø)
...src/pages/MarketplacePage/tests/mocks/providers.js	100.00% <ø> (ø)
...ore/admin/admin/src/pages/MarketplacePage/index.js	95.14% <91.66%> (ø)
.../src/hooks/useFetchMarketplacePlugins/utils/api.js	100.00% <100.00%> (ø)
...rc/hooks/useFetchMarketplaceProviders/utils/api.js	100.00% <100.00%> (ø)
...lacePage/components/NpmPackagesPagination/index.js	100.00% <100.00%> (ø)
...in/admin/src/pages/MarketplacePage/tests/server.js	94.59% <100.00%> (ø)
...n/admin/src/content-manager/pages/App/useModels.js	0.00% <0.00%> (ø)
...ers-permissions/admin/src/pages/Providers/index.js	69.89% <0.00%> (ø)
...c/content-manager/components/Inputs/utils/index.js	100.00% <0.00%> (ø)
... and 1046 more

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[madhurisandbhor]

🚀