Update notification style

[bmarty]

Content

Use Compound icons for the notification action. Those icon are never used on mobile running API 24+ but may be used by wearable devices.
Let the notification use the brand color if available.
Also remove the green Element logo from the troubleshoot notification.

Motivation and context

Application customization

Screenshots / GIFs

Before	After

Tests

• Login to an account which support brand color.
• Observe how the notification are rendered.

Tested devices

• Physical
• Emulator
• OS version(s):

Checklist

• Changes have been tested on an Android device or Android emulator with API 24
• UI change has been tested on both light and dark themes
• Accessibility has been taken into account. See https://github.com/element-hq/element-x-android/blob/develop/CONTRIBUTING.md#accessibility
• Pull request is based on the develop branch
• Pull request title will be used in the release note, it clearly define what will change for the user
• Pull request includes screenshots or videos if containing UI changes
• You've made a self review of your PR

[github-actions]

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[jmartinesp]

LGTM, although it will cause a few conflicts with #5595 🥲 .

[jmartinesp]

Nit for this one and others: tintColor or brandColor instead maybe?

[bmarty]

Since at the end it's used for NotificationCompat.Builder.setColor() I think this name is quite ok...

[codecov]

Codecov Report

❌ Patch coverage is 94.64286% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 81.69%. Comparing base (9a39594) to head (1080319).
⚠️ Report is 15 commits behind head on develop.

Files with missing lines	Patch %	Lines
...push/impl/notifications/NotificationDataFactory.kt	80.00%	1 Missing ⚠️
...es/push/impl/notifications/NotificationRenderer.kt	87.50%	0 Missing and 1 partial ⚠️
...braries/push/impl/troubleshoot/NotificationTest.kt	83.33%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #5607   +/-   ##
========================================
  Coverage    81.69%   81.69%           
========================================
  Files         2389     2389           
  Lines        64887    64893    +6     
  Branches      8236     8237    +1     
========================================
+ Hits         53009    53014    +5     
  Misses        8827     8827           
- Partials      3051     3052    +1     

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[sonarqubecloud]

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 SonarQube Cloud