feat: disable automatic playback on seek

[naveensingh]

Type of change(s)

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

What changed and why

• Removed overrides in SimpleMusicPlayer that triggered play() on seek. This doesn't affect skipping to next/previous tracks behavior.
• Fixed autoplay behavior when skipping to the next/previous track on TrackActivity.

Tests performed

• Playing, seeking, skipping tracks with 10000 items

Closes the following issue(s)

• Closes Ability to disable automatic playback when seeking #97

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.).
• All checks are passing.