fix(ac11y): unset custom color of storybook left chevrons to fix contrast

[Mnickii]

Closes #2317

PR Type

Bugfix

Description of the changes

Unset custom color of storybook left expanded/collapsed chevrons to fix contrast

PR checklist

• Project builds (yarn build) and changes have been tested in at least two supported browsers (Edge + non-Chromium based browser)
• All public APIs (classes, methods, etc) have been documented following the jsdoc syntax
• Stories have been added and existing stories have been tested
• Added appropriate documentation. Docs PR:

• License header has been added to all new source files (yarn setLicense)
• Contains NO breaking changes

Other information

[ghost]

Thank you for creating a Pull Request @Mnickii.

This is a checklist for the PR reviewer(s) to complete before approving and merging this PR:

• I have verified a documentation PR has been linked and is approved (or not applicable)
• I have ran this PR locally and have tested the fix/feature
• I have verified that stories have been added to storybook (or not applicable)
• I have tested existing stories in storybook to verify no regression has occured
• I have tested the solution in at least two browsers (Edge + 1 non-Chromium based browser)

[microsoft-github-policy-service]

Thank you for creating a Pull Request @Mnickii.

This is a checklist for the PR reviewer(s) to complete before approving and merging this PR:

• I have verified a documentation PR has been linked and is approved (or not applicable)
• I have ran this PR locally and have tested the fix/feature
• I have verified that stories have been added to storybook (or not applicable)
• I have tested existing stories in storybook to verify no regression has occured
• I have tested the solution in at least two browsers (Edge + 1 non-Chromium based browser)

[github-actions]

The updated storybook is available here

[github-actions]

The updated storybook is available here

[github-actions]

The updated storybook is available here

[vagpt]

Hi @gavinbarron

While opening the above-mentioned URL, we are getting the error below.

[vagpt]

Hi @gavinbarron

Hope you are doing great.

Could you please provide us updated URL to verify this issue as the mentioned URL in PR is not working.

[gavinbarron]

The changes here are in main, you can retest this on https://mgt.dev

[vagpt]

Hi @gavinbarron,

This issue is still repro on the environment below, hence reactivating this issue.

Test Environment:
URL: https://mgt.dev/?path=/docs/overview--docs
OS Version: 24H2 (OS Build 26063.1)
Browser Version: Edge Dev 124.0.2450.2
Tool: Accessibility Insight For Windows

Snippet: