2026-05-18

Fix broken @oss-disable markers that break OSS builds

Summary:
Several prelude files had `# oss-disable` only on the closing line of multi-line statements. Codesync strips marked lines individually, so this left dangling syntax (unclosed `load(` calls, empty `if False:` bodies) that caused Starlark parse errors in OSS builds.

Fixes:
- Multi-line `load()` statements: mark every line with `# oss-disable`, not just the closing paren.
- `if`/`else` blocks where the `if` body is fully disabled: add `# oss-enable: pass` so the `if False:` block has a valid body after stripping.

Files: `android_binary_native_library_rules.bzl`, `apple_binary.bzl`, `apple_library.bzl`, `apple_error_handler.bzl`.

This fixes the `buck2-oss-docs` CI test which has been disabled due to these parse errors.

Reviewed By: JakobDegen

Differential Revision: D105501080

fbshipit-source-id: f99170c91a668851632a2fdafb81247798e1404a