Demote phantom ::t() errors to info; patch phpstan-drupal PR #989 in pipeline
### Problem/Motivation Demote false-positive 'undefined method ::t()' errors to info severity when they stem from optional module base classes that are not installed via composer. This allows projects blocked only by phantom errors to become updatable. Patch phpstan-drupal's DeprecationHelperScope to traverse full call stacks (not just the innermost frame) so DeprecationHelper BC wrappers nested inside other calls are correctly recognized, eliminating inflated post-rector error counts for already-fixed deprecations. ### Work items - Commit(s): [ac6164fe95](https://git.drupalcode.org/project/project_analysis/-/commit/ac6164fe950c), [e8e53f90fa](https://git.drupalcode.org/project/project_analysis/-/commit/e8e53f90fa75) ### Credit - Implemented by: @bbrala - Test-project feedback: @goba, @nicxvan, @wimleers, @rfay, @larowlan --- *Filed retroactively as part of the Drupal 12 rector coverage effort. Closed as fixed; credit to be applied to the contributors listed above.* *AI was used extensively to build this work and to file this issue. See [Dries Buytaert: AI-generated Rector rules for Drupal](https://dri.es/ai-generated-rector-rules-for-drupal) and [Björn Brala: Drupal Rector rules are config, not code. Mostly.](https://www.linkedin.com/pulse/drupal-rector-rules-config-code-mostly-bj%C3%B6rn-brala-vfpwe/).*
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