fix(migrations): handle more cases in HttpClientModule migration

[cexbrayat]

PR Checklist

Please check if your PR fulfills the following requirements:

• [x] The commit message follows our guidelines: https://github.com/angular/angular/blob/main/CONTRIBUTING.md#commit
• [x] Tests for the changes have been added (for bug fixes / features)
• [ ] Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• [x] Bugfix
• [ ] Feature
• [ ] Code style update (formatting, local variables)
• [ ] Refactoring (no functional changes, no api changes)
• [ ] Build related changes
• [ ] CI related changes
• [ ] Documentation content changes
• [ ] angular.io application / infrastructure changes
• [ ] Other... Please describe:

What is the current behavior?

This commit handles two cases that were breaking applications when using the new migration:

• tests using HttpClientModule in TestBed.configureTestingModule were broken as the import was removed, but the module is still present in the test configuration.
• tests using HttpClientTestingModule were migrated to use provideHttpClient(withInterceptorsFromDi()) but the necessary imports were not added.

What is the new behavior?

It now properly adds provideHttpClient(withInterceptorsFromDi()) and related imports to the test for the tests that were using HttpClientModule It also adds the necessary imports for provideHttpClient and withInterceptorsFromDi for tests that were using HttpClientTestingModule

Does this PR introduce a breaking change?

• [ ] Yes
• [x] No

Other information

[cexbrayat]

@crisbeto Thank you for the review. I updated the PR with your feedback, PTAL.

[AndrewKushnir]

This PR was merged into the repository by commit 7a2efd442df66cfcee28105405550635f152c51d.