Clean room shield update logic

[BillCarsonFr]

Type of change

• Feature
• Bugfix
• Technical
• Other :

Content

Cleaned a bit the room shield update logic, as some issues are reported against outdated shields.

The logic is cleaned so that shields are updated:

• When a change of devices/keys/signeture of one of the member is detected (DeviceListManager for kotlin / OutgoingRequestsProcessor for rust
• When a membership change is detected on the room (or encryption has been set)

Rust code was missing the update on membership changes.
The kotlin code seems to be subject to some races while accessing realm in a multithreaded context.

Added some integration test to check the different updates RoomShieldTest

Should fix #8308 but main focus is to have the rust flavor working correctly.

Motivation and context

Screenshots / GIFs

Tests

• Step 1
• Step 2
• Step ...

Tested devices

• Physical
• Emulator
• OS version(s):

Checklist

• Changes has been tested on an Android device or Android emulator with API 21
• UI change has been tested on both light and dark themes
• Accessibility has been taken into account. See https://github.com/vector-im/element-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/vector-im/element-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
• If you have modified the screen flow, or added new screens to the application, you have updated the test UiAllScreensSanityTest.allScreensTest()

[bmarty]

LGTM, hard to see if there is a bug though :/

[sonarcloud]

SonarCloud Quality Gate failed.   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
2 Code Smells

0.0% Coverage
0.0% Duplication

[yncyrydybyl]

This is fixing PSB-263 as well.