Add ajax wait for requests

What does this MR do?

Introduces Ajax wait for request mechanism and adds it to visit! and multiple QA::Page::Base methods.

Closes #55286 (closed)

Conformity

• [-] Changelog entry
• [-] Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• [-] Database guides
• [-] Separation of EE specific content