fix: text highlight colors [WPB-5940]

[saleniuk]

WPB-5940 [Android] When searching for a message in dark mode, search result is highlighted in very bright color

---

PR Submission Checklist for internal contributors

• The PR Title

  • conforms to the style of semantic commits messages¹ supported in Wire's Github Workflow²
  • contains a reference JIRA issue number like SQPIT-764
  • answers the question: If merged, this PR will: ... ³

• The PR Description

  • is free of optional paragraphs and you have filled the relevant parts to the best of your ability

---

What's new in this PR?

Issues

Highlight text color and background are different than on the design documentation.

Solutions

• change highlight background colors and remove invalid alpha value
• add onHighlight color to scheme and use as highlight text color
• update palette - change "Yellow" to "Amber" to be consistent with the design documentation

Testing

How to Test

Search for something, especially on dark mode.

Attachments (Optional)

Before	After

---

PR Post Submission Checklist for internal contributors (Optional)

• Wire's Github Workflow has automatically linked the PR to a JIRA issue

---

PR Post Merge Checklist for internal contributors

• If any soft of configuration variable was introduced by this PR, it has been added to the relevant documents and the CI jobs have been updated.

---

References

1. https://sparkbox.com/foundry/semantic_commit_messages
2. https://github.com/wireapp/.github#usage
3. E.g. feat(conversation-list): Sort conversations by most emojis in the title #SQPIT-764.

[github-actions]

Test Results

794 tests   794 ✅  10m 9s ⏱️
108 suites    0 💤
108 files      0 ❌

Results for commit e54b44a.

♻️ This comment has been updated with latest results.

[github-actions]

APKs built during tests are available here. Scroll down to Artifacts!

[AndroidBob]

Build 3037 succeeded.

The build produced the following APK's:

• com.wire.android-v4.6.0(8852747)(8852747)-staging-compat.apk