Reduce spec flakiness

What does this MR do and why?

This is a follow-up MR to !135111 (merged).

!135111 (merged) was merged but a backend review input was left unaddressed. This MR applies the changes recommended by that input.

Screenshots or screen recordings

NA

How to set up and validate locally

NOTE: This MR only updates specs

Refer to the verification steps in the issue (confidential)

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #427201 (closed)