Adding refresh and more wait time to remedy flakiness

What does this MR do?

Sometimes pipeline status on Merge Request page doesn't update automatically causing test flakiness #335007 (closed). I'm adding page refresh logic and increase wait time incase there is significant lagging happens. Also file a transient bug #335124 (closed), when this bug is resolved, we can revert this change.

Does this MR meet the acceptance criteria?

Conformity

• I have included changelog trailers, or none are needed. (Does this MR need a changelog?)
• I have added/updated documentation, or it's not needed. (Is documentation required?)
• I have properly separated EE content from FOSS, or this MR is FOSS only. (Where should EE code go?)
• I have added information for database reviewers in the MR description, or it's not needed. (Does this MR have database related changes?)
• I have self-reviewed this MR per code review guidelines.
• This MR does not harm performance, or I have asked a reviewer to help assess the performance impact. (Merge request performance guidelines)
• I have followed the style guides.
• This change is backwards compatible across updates, or this does not apply.

Related to #335007 (closed) & #335006 (closed)