Summary

Fixes #9874 - Error handlers (catchAll, foldZIO, either, etc.) now correctly prioritize defects and interruptions over failures.

Approach

• Added Cause.isRecoverable to check if cause contains only failures
• Modified failureOrCause and failureTraceOrCause to return Right when defects or interrupts are present

Verification

• Added 7 tests for isRecoverable
• Added 6 tests for failureOrCause

/claim #9874