fix: updating close icon svg

[georgewrmarshall]

Description

This pull request updates the close icon SVG to match the design specifications. The existing SVG used in the code was inconsistent with the design provided by the design team, so this change replaces it with the correct version to ensure visual consistency across the application.

Related issues

Fixes: #27234

Manual Testing Steps

1. Navigate to any part of the application where the close icon is displayed.
2. Verify that the close icon matches the design specification.
3. Test the icon in various browsers (Chrome, Firefox, etc.) to ensure it displays correctly.
4. Test on both light and dark modes (if applicable).
5. Verify the close icon’s appearance in different screen sizes (desktop, tablet, mobile).

Screenshots/Recordings

Before

After

Pre-merge author checklist

• I've followed MetaMask Contributor Docs and MetaMask Extension Coding Standards.
• I've completed the PR template to the best of my ability
• I’ve included tests if applicable
• I’ve documented my code using JSDoc format if applicable
• I’ve applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

[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.

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[metamaskbot]

Builds ready [9150bdf]

• builds: chrome, firefox
• builds (beta): chrome
• builds (flask): chrome, firefox
• builds (MMI): chrome, firefox
• builds (test): chrome, firefox
• builds (test-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, 10, 11, 2, 3, 4, 5, 6, 7, 8, 9
  • content-script: 0
  • offscreen: 0
  • ui: 0, 1, 10, 11, 2, 3, 4, 5, 6, 7, 8, 9

Page Load Metrics (1630 ± 99 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	1461	2399	1626	216	104
		domContentLoaded	1452	2296	1606	201	96
		load	1470	2356	1630	206	99
		domInteractive	20	181	37	35	17

Bundle size diffs

• background: 0 Bytes (0.00%)
• ui: 0 Bytes (0.00%)
• common: 0 Bytes (0.00%)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.02%. Comparing base (bc7929b) to head (9150bdf).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop   #27235   +/-   ##
========================================
  Coverage    70.02%   70.02%           
========================================
  Files         1443     1443           
  Lines        50164    50164           
  Branches     14039    14039           
========================================
  Hits         35126    35126           
  Misses       15038    15038           

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