UX: Use System Theme for tooltip

[darkwing]

Explanation

When in dark mode, I see token list name tooltips in light theme mode. This makes the token name hard to read. This removes the casting that causes this problem.

Screenshots/Screencaps

Pre-merge author checklist

• I've clearly explained:
  • What problem this PR is solving
  • How this problem was solved
  • How reviewers can test my changes
• Sufficient automated test coverage has been added

Pre-merge reviewer checklist

• Manual testing (e.g. pull and build branch, run in browser, test code being changed)
• PR is linked to the appropriate GitHub issue
• IF this PR fixes a bug in the release milestone, add this PR to the release milestone

If further QA is required (e.g. new feature, complex testing steps, large refactor), add the Extension QA Board label.

In this case, a QA Engineer approval will be be required.

[github-actions]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

[darkwing]

Am I missing something here @NidhiKJha ?

[NidhiKJha]

Looking really good 🚀

[metamaskbot]

Builds ready [bd178ad]

• builds: chrome, firefox
• builds (beta): chrome
• builds (flask): chrome, firefox
• build viz: Build System
• mv3: Background Module Init Stats
• mv3: UI Init Stats
• mv3: Module Load Stats
• mv3: Bundle Size Stats
• mv2: E2e Actions Stats
• code coverage: Report
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5
  • common: 0, 1, 2, 3, 4, 5
  • content-script: 0
  • contentscript: contentscript
  • disable-console: disable-console
  • inpage: inpage
  • policy-load: policy-load
  • sentry-install: sentry-install
  • ui: 0, 1, 10, 11, 12, 2, 3, 4, 5, 6, 7, 8, 9

Page Load Metrics (1790 ± 52 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	119	194	152	26	12
		domContentLoaded	1594	2011	1789	110	53
		load	1616	2011	1790	109	52
		domInteractive	1593	2011	1789	110	53

Bundle size diffs

• background: 0 bytes
• ui: -87 bytes
• common: 0 bytes

[codecov]

Codecov Report

Merging #19954 (bd178ad) into develop (1452803) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop   #19954      +/-   ##
===========================================
- Coverage    69.52%   69.52%   -0.00%     
===========================================
  Files          983      983              
  Lines        37168    37166       -2     
  Branches      9965     9964       -1     
===========================================
- Hits         25841    25839       -2     
  Misses       11327    11327              

Impacted Files	Coverage Δ
...ents/multichain/token-list-item/token-list-item.js	94.74% <ø> (-0.50%)	⬇️