Improve designs of FTUE analytics opt-in screen

[jmartinesp]

Type of change

• Feature
• Bugfix
• Technical
• Other : UI improvement

Content

• Adds gradient background to the FTUE analytics opt-in screen.
• Changes the icons used in that same screen.
• Adjusts paddings, background colors and text sizes in InfoListMolecule and InfoListOrganism.

Motivation and context

Makes the UI follow the latest design changes, following what was done in #2581.

Screenshots / GIFs

Before	After

Tests

• Log into a new account.
• Follow the FTUE process.
• Check the screen looks as expected.

Tested devices

• Physical
• Emulator
• OS version(s): 14

Checklist

• Changes have been tested on an Android device or Android emulator with API 23
• 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 includes a new file under ./changelog.d. See https://github.com/element-hq/element-x-android/blob/develop/CONTRIBUTING.md#changelog
• Pull request includes screenshots or videos if containing UI changes
• Pull request includes a sign off
• You've made a self review of your PR

[github-actions]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.57%. Comparing base (cf072fa) to head (77de187).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #2684   +/-   ##
========================================
  Coverage    73.57%   73.57%           
========================================
  Files         1460     1460           
  Lines        35323    35317    -6     
  Branches      6792     6790    -2     
========================================
- Hits         25988    25984    -4     
  Misses        5795     5795           
+ Partials      3540     3538    -2     

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[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud