fix(frontend): Fix run comparison filter

[zpChris]

Description of your changes:

• Fix [frontend] Run Comparison filter mechanism broken #7827

1. Add filter functionality for run lists with a run ID list mask
2. Add tests to verify that the filter mechanism for RunList.tsx works correctly in all cases

Screen Recording:

This screencast shows both the "Runs" tab and the Run Comparison page working correctly (though only the latter needed a fix).

RunComparisonFilterFixed.mp4

Notes:

• This issue occurred because the filtering mechanism typically occurs through the listRuns API, but since that method does not have support for the runIdListMask, when a mask exists each run is fetched individually (see the _loadRuns method). This individual fetching of runs did not have a filtering mechanism, and I added that in this PR.
• Currently, only the "name substring" filtering is supported, so I have hard-coded the filterSubstring within RunList.tsx to detect and apply this filter. However, if more filter options are added in the future, we will likely want to separate this filter logic out.

Checklist:

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[zpChris]

/assign @jlyaoyuli

[zijianjoy]

/lgtm
/approve

Thank you Chris for fixing the filtering issue on Compare page! Approving this PR assuming the presubmit passes.

[google-oss-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: zijianjoy

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