fix(core): scope GSAP selector arrays within compositions

[lorenzozanee]

Scope selector strings inside GSAP target arrays to the active composition root and add regression coverage for cross-composition leakage.

The resolver now scopes each string entry and preserves non-string targets, preventing selectors from resolving against the whole document when compositions are bundled. The focused composition-scoping test suite passes with 57 tests.

Validation:

• bun run --cwd packages/core test -- src/compiler/compositionScoping.test.ts
• bun run --cwd packages/core typecheck
• bunx oxfmt --check packages/core/src/compiler/compositionScoping.ts packages/core/src/compiler/compositionScoping.test.ts
• bunx oxlint packages/core/src/compiler/compositionScoping.ts packages/core/src/compiler/compositionScoping.test.ts
• git diff --check

Fixes #4034

[miguel-heygen]

Thank you for this. The same fix is already on main via #4035, so this one is no longer needed. Closing; happy to reopen if you see the problem still happening on the latest release.