Enable notifications for characteristic changes

[dbkr]

by setting the appropriate descriptor, which apparently is not
a thing that setCharacteristicNotification does

Type of change

• Feature
• Bugfix
• Technical
• Other :

Content

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()

[github-actions]

Ktlint Results

👎Failed
vector 🔸 features/widgets/ptt/BluetoothLowEnergyService.kt:19:1: Imports must be ordered in lexicographic order without any empty lines in-between with "java", "javax", "kotlin" and aliases in the end (import-ordering)

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

0.0% Coverage
0.0% Duplication

[onurays]

LGTM for the test purpose. Thanks!