Track down unconditional wait in test and find replacement

[soulomoon]

In the testsuit, there are a lot of places using the unconditional wait with timeout. We might want to sweep them out. By comming up with conditional wait instead of uncontional wait with timeout.

• See example unconditional wait Overhauling the HLS testsuite #3736 (comment)
• Remove Unconditional time out wait for diagnostic. See expectNoMoreDiagnostics #4300
• Speed up hls-hlint-plugin-tests #4144