chore: [IOPLT-999] Update iOS/Android splash screens to new UI

[dmnplb]

Short description

This PR updates iOS/Android splash screens to the new UI.

List of changes proposed in this pull request

• [iOS] Update LaunchScreen.storyboard with the new background color (b3279fe)
  • Update layout constraints compared to the previous version
• [Android] Update Android launch screen (1759431)

Preview

iOS	Android

How to test

Launch the iOS/Android app in your local environment and check if the solid tint colour is rendered as expected

[github-actions]

Jira Pull Request Link

This Pull Request refers to Jira issues:

• IOPLT-999

[github-actions]

PR Title Validation for conventional commit type

✅ All good! PR title follows the conventional commit type.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 51.01%. Comparing base (48e3be8) to head (a28730e).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #6781   +/-   ##
=======================================
  Coverage   51.01%   51.01%           
=======================================
  Files        1579     1579           
  Lines       32692    32692           
  Branches     7355     7405   +50     
=======================================
  Hits        16678    16678           
+ Misses      15969    15957   -12     
- Partials       45       57   +12     

see 12 files with indirect coverage changes

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[shadowsheep1]

LGTM