breaking: remove the cypress/angular-signals test harness. The changes incorporated in @cypress/angular-signals are now merged upstream into @cypress/angular and the package is no longer needed

[AtofStryker]

• Closes #29606

Additional details

merges the angular-signals test harness implemented in #29621 upstream into cypress/angular and deleted the angular-signals test harness as we no longer need it.

• [x] how does migration look like? When starting Cypress 14, and a user is pulling in cypress/angular-signals, an error is thrown as we no longer ship this with the binary. This is covered in the migration guide

changing the import from cypress/angular-signals to cypress/angular works as expected and signals is natively supported in cypress/angular

Steps to test

How has the user experience changed?

PR Tasks

• [x] Have tests been added/updated?
• [x] Has a PR for user-facing changes been opened in cypress-documentation? https://github.com/cypress-io/cypress-documentation/pull/5983
• [x] deprecate the @cypress/angular-signals test harness with a message that it has merged upstream (added to release checklist)
• [ ] Have API changes been updated in the type definitions?

[cypress[bot]]

cypress    Run #58223

Run Properties:   Passed #58223  •  ddd40669a2: breaking: remove the cypress/angular-signals test harness. The changes incorpora...

Project	cypress
Branch Review	breaking/remove_angular_signals_test_harness
Run status	Passed #58223
Run duration	17m 34s
Commit	ddd40669a2: breaking: remove the cypress/angular-signals test harness. The changes incorpora...
Committer	AtofStryker
View all properties for this run ↗︎

---

Test results
Failures	0
Flaky	0
Pending	27
Skipped	0
Passing	765
View all changes introduced in this branch ↗︎

UI Coverage  68.29%
Untested elements	24
Tested elements	56

Accessibility  96.21%
Failed rules	0 critical   4 serious   1 moderate   0 minor
Failed elements	202