test: mark test-http2-respond-file-error-pipe-offset flaky

This is now failing inconsistently across many platforms. This appears to be the result of the addition of mustSucceed being added to the test during testing refactoring. We should mark flaky until we have figured out what the issue is. Refs: #35881 PR-URL: #35883 Reviewed-By: Tobias Nießen <[email protected]> Reviewed-By: Gireesh Punathil <[email protected]>

Author: MylesBorins

test/parallel/parallel.status

@@ -5,6 +5,7 @@ prefix parallel
 # sample-test : PASS,FLAKY
 
 [true] # This section applies to all platforms
+test-http2-respond-file-error-pipe-offset: PASS,FLAKY
 
 [$system==win32]
 # https://github.com/nodejs/node/issues/20750