Fleet UI: Remove blue click flash on clickable table rows

[RachelElysia]

Issue

Closes #47530

Description

• Bug fix (root cause): .single-row:active set background-color: $ui-vibrant-blue-10, so clicking a row (e.g., a policy on My device > Policies) briefly flashed a pale purple/blue background in light mode and a dark navy in dark mode. It read as a stuck default/un-themed selected state.
• Dropped the :active rule. Hover still shows cursor: pointer and the off-white row background, so click affordance is preserved without the mis-themed flash.
• Thinned the row :focus-visible outline from 2px to 1px so keyboard focus on clickable rows matches the outline width used elsewhere (link mixin's :focus-visible).

Screenrecording

• Clicking a policy on My device > Policies in light and dark mode.

Screen.Recording.2026-07-13.at.11.17.10.AM.mov

Screen.Recording.2026-07-13.at.11.18.20.AM.mov

Testing

• QA'd all new/changed functionality manually

Summary by CodeRabbit

• Bug Fixes
  • Removed the blue active-state “flash” when clicking a row in single-select data tables (e.g., My device > Policies).
  • Kept the existing hover behavior and pointer cursor for clickable rows.
  • Reduced the table row focus-visible outline thickness for a subtler focus indicator.

[Copilot]

Warning

• Copilot's review of this pull request may be incomplete because some of the changed files are excluded by your Copilot content exclusion settings. See Excluding content from Copilot for details.

Pull request overview

Removes the unintended “blue flash” active-state styling when clicking clickable rows in Fleet’s shared DataTable, aligning click feedback with the intended theming on My device > Policies (and any other surfaces using the same row styling).

Changes:

• Removed the .single-row:active background color override that caused the mis-themed highlight on click.
• Preserved hover affordance (pointer cursor + hover background) and keyboard focus styling (:focus-visible outline).

Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated no comments.

File	Description
frontend/components/TableContainer/DataTable/_styles.scss	Drops the :active background override so clicked rows no longer flash the vibrant blue color.
changes/47530-my-device-policy-click-highlight	Release note / changelog entry (content excluded by policy from review).

Files excluded by content exclusion policy (1)

• changes/47530-my-device-policy-click-highlight

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[coderabbitai]

Walkthrough

Removed the blue active-state background from single-select data table rows and reduced the focus-visible outline thickness. Hover behavior remains unchanged, including the pointer cursor. This prevents the background flash when clicking rows such as policies on the My device page.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	The code fixes the reported blue highlight on policy clicks in light and dark mode as requested by #47530.
Out of Scope Changes check	✅ Passed	The focus-visible outline tweak is a small related polish change and not clearly outside the issue scope.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Title check	✅ Passed	The title clearly matches the main change: removing the blue click flash from clickable table rows.
Description check	✅ Passed	The description includes the linked issue, a clear change summary, screenrecordings, and manual testing notes.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch 47530-my-device-policy-blue-highlight

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