Fix: Resolve search filter controls overlap on findings page (#901)

[sahare-mayur-0071]

Fixes #901

• Updated the filter container in \Findings.tsx\ to use flex column instead of forcing components inline via rigid grid templates on large screens.
• Limited filter grid to a max of 4 columns, preventing inputs from becoming too narrow and clipping text.
• Assigned \min-w-0\ to field containers to ensure they respect the grid cells.
• Stacked the actions controls below the filter grid to guarantee they don't crash into each other.

[utksh1]

Requesting changes. This mixes a Findings layout fix with a CI branch-protection roll-up job. Please split the CI workflow change from the frontend layout fix, and include focused frontend coverage for the overlap regression.

[sahare-mayur-0071]

I have updated this PR to only include the Findings layout fix and added the focused frontend unit tests for the layout regression as requested. The CI roll-up job has been removed from this branch and I will open a separate PR for it. Note: frontend-checks is waiting for status here because the roll-up job fix is no longer in this branch.