Playwright utils: move plugin-specific request utils to global-setup

[swissspidy]

What problem does this address?

Right now the request utils in e2e-test-utils-playwright contain a lot of Gutenberg-specific logic that does not apply to other setups:

gutenberg/packages/e2e-test-utils-playwright/src/test.ts

Lines 139 to 149 in b380a60

	await Promise.all( [
	requestUtils.activateTheme( 'twentytwentyone' ),
	// Disable this test plugin as it's conflicting with some of the tests.
	// We already have reduced motion enabled and Playwright will wait for most of the animations anyway.
	requestUtils.deactivatePlugin(
	'gutenberg-test-plugin-disables-the-css-animations'
	),
	requestUtils.deleteAllPosts(),
	requestUtils.deleteAllBlocks(),
	requestUtils.resetPreferences(),
	] );

Because of this I need to manually override the requestUtils fixture in my setup, because otherwise I get errors about things like the gutenberg-test-plugin-disables-the-css-animations plugin not existing.

In my case it's not desired to trash all posts because I need some test data before the tests run.

What is your proposed solution?

Move the highlighted parts above to the global setup file, because that's really where this code belongs.

[swissspidy]

cc @kevin940726 @noisysocks @talldan who were involved in writing that code

[kevin940726]

Makes sense. I don't remember why I didn't do that in the first place 😅 . Maybe it's because global-setup only runs once but worker fixture runs before each test suite? Feel free to open PRs to explore this idea though! 🙇