fix: handle device rotations from before app start

[PhilLab]

Type of change(s)

• Bug fix
• Feature / enhancement
• Infrastructure / tooling (CI, build, deps, tests)
• Documentation

What changed and why

Previously, both images and videos where stored with the wrong orientation if you had rotated the phone to landscape before opening the app. Only rotations while the camera app is open were handled by the listener.

The target rotation also needs to be applied immediately at bind time, to correctly react to rotations that happened before the app lifecycle.

The commit also addresses linter warnings in the same file. I figured they are too small to justify a separate PR, but let me know if they shall be removed again.

Tests performed

• Tested on emulator and Pixel 10 physical device

Closes the following issue(s)

• Closes Rotating the phone before opening app leads to wrongly oriented photos and videos #294

Checklist

• I read the contribution guidelines.
• I manually tested my changes on device/emulator (if applicable).
• I updated the "Unreleased" section in CHANGELOG.md (if applicable).
• I have self-reviewed my pull request (no typos, formatting errors, etc.).
• I understand every change in this pull request.