Add some TS component blueprint tests

[Windvis]

While looking into #20511 I noticed there weren't any tests for the --typescript version of the blueprints.

This adds a some ts tests for the component blueprint. We can add tests for other blueprint in follow up PRs.

I included a pnpm patch for the ember-cli/ember-cli-blueprint-test-helpers package since it doesn't accept any extra cli arguments for ember new in its current state: https://github.com/ember-cli/ember-cli-blueprint-test-helpers/issues/391

This also fixes a bug where ember g component foo.ts would generate .ts.hbs files since .ts wasn't normalized yet.

Partially solves: https://github.com/emberjs/ember.js/issues/20362

[Windvis]

Hmm, I think CI isn't using the pnpm patch. It does seem to work locally, so not sure what I did wrong. :thinking:

Edit: Ah no, I forgot about the blueprint tests that mimic the scenario where .ts can't be transpiled (so the blueprints-js folder is used instead).

[Windvis]

Do you have a pr for the test-helpers as well?

~~No, what test-helpers do you mean?~~

Sorry, It seems I'm a bit slow after a 2 week holiday :sweat_smile: I haven't created a PR yet no, I can open one if the patch in this PR seems ok.

[Windvis]

@NullVoxPopuli Is creating a PR in the helpers repo and getting that merged / released a blocker for this one, or can we merge with the patch? That repo doesn't seem to be maintained and it has no Github actions setup either. I don't really have the time to get that repo in a good state so PRs can be merged I'm afraid.

Other than that I think I should split off the .ts.ts fix into a separate one (and fix it for all the .ts blueprints at the same time maybe?), and resolve the merge conflicts, but then this should be good to go.

[Windvis]

Going to close this since it's outdated and we can just use --typescript where needed.