[Ignore for now] Anca/Test stabilization edit credit card

[soncuteanca]

Description

• The change replaces the while True loop with custom_wait, which potentially avoids infinite loops and avoids unnecessary resource usage.

Bugzilla bug ID

Link: https://bugzilla.mozilla.org/show_bug.cgi?id=1938368

Type of change

Please delete options that are not relevant.

• [x ] Other Changes (see description)

How does this resolve / make progress on that bug?

• In progress

Screenshots / Explanations

• N/A

Comments / Concerns

• I can't make this test fail locally. The initial problem reported was likely an unclosed context menu, so I've explored potential improvements here, but all of them increased test run times considerable and the impact on performance.

[soncuteanca]

Closing this PR due to setup and dependency issues that affected test discovery and execution. To avoid further debugging and patching, I believe starting fresh with a new branch will be more efficient.