test: Fix UserAndRoomAutoCompleteMultiple.spec.tsx and improve it

[tiagoevanp]

Proposed changes (including videos or screenshots)

This pull request addresses a test failure by fixing and enhancing the UserAndRoomAutoCompleteMultiple.spec.tsx test suite. The changes improve test coverage and reliability.

Issue(s)

CORE-1304

Steps to test or reproduce

Further comments

[dionisio-bot]

Looks like this PR is not ready to merge, because of the following issues:

• This PR is missing the 'stat: QA assured' label
• This PR is targeting the wrong base branch. It should target 7.10.0, but it targets 7.9.0

Please fix the issues and try again

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[changeset-bot]

⚠️ No Changeset found

Latest commit: 64b3396

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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[github-actions]

PR Preview Action v1.6.2
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 65.68%. Comparing base (960a914) to head (64b3396).
Report is 10 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #36484      +/-   ##
===========================================
+ Coverage    65.38%   65.68%   +0.29%     
===========================================
  Files         3191     3174      -17     
  Lines       106414   105831     -583     
  Branches     20257    20177      -80     
===========================================
- Hits         69581    69517      -64     
+ Misses       34130    33634     -496     
+ Partials      2703     2680      -23     

Flag	Coverage Δ
e2e	58.07% <ø> (+0.31%)	⬆️
unit	70.83% <ø> (-0.02%)	⬇️

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