Fix StreamEventsManager not signaling event decryptions

[BillCarsonFr]

Fix StreamEventsManager not signaling event decrytions. Was not wired when switching to rust crypto. As a consequence the UISIDetector that is suppose to auto-report UISI (if enabled in settings) was not working.

Type of change

• [ ] Feature
• [ ] Bugfix
• [x] Technical
• [ ] Other :

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• [ ] Physical
• [ ] Emulator
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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/element-hq/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/element-hq/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()