fix: correct is_bitcode_generation_skipped early-return logic

[duna-feline]

Changes

Rewrote is_bitcode_generation_skipped() to use early-return on first matching condition instead of iterating through all conditions.

Before: Loop overwrote message for every match, only logging the last match's reason.
After: Returns immediately on first match with correct reason.

Why

The previous logic was misleading — it appeared to check all conditions but the logged reason could be wrong if multiple conditions matched.