[b-re-w]

Fixes the two red develop workflows. #329 already landed in #330.

• TypedPython CI: both Linux jobs failed with 264 copies of tp_runtime.h:509 'unused variable vd' (-Werror). Since Fix: numpy floor_divide/remainder flags on Linux (#292) #296, vd was assigned only under APPLE. It is now declared inside that branch. Local macOS runs pass: test_runtime 264, test_buffer_numpy 69, test_cgen 59. The Linux result is confirmed by this PR's CI.
• Kotlin-name stubs, two causes:
  1. Binder: a public companion object is reachable from Python as a value (Owner.Companion) #322: the 'Companion: Owner' attribute collided with the companion's own type path. mypy reported 'not valid as a type' and 'already defined'.
     • A companion typed as its own type now keeps the type path, with only a marker comment.
     • An owner-typed companion is written only when no nested class of that name is rendered, decided after all nested classes are known.
     • The same rule applies on the module path (Alignment, PathOperation).
  2. Since Binder: Button/Card shape= and colors= (walk foundation.shape, accept ButtonDefaults.buttonColors) #307, which walks foundation.shape, a subclass that overrides one overload of an inherited name hid the inherited overload set (CornerBasedShape.copy / createOutline). The subclass now renders the full set Kotlin resolution sees, in the supertype's order (mypy requires that order). The same function orders every level. Test: InheritedOverloadStubTest.
• Local results:
  • check-stubs.sh (the workflow's mypy step) on freshly generated compose stubs: 'Success: no issues found'. CI had 186 errors.
  • Plugin tests 351/351, artifact fixture 50/50 (WalkedArtifactStubTest).