Studio: Playhead jump (A/E) overrides player state and canvas zoom reset fails in split-screen view

[O1Anas]

Describe the bug

1. Playhead Jump (A/E) Overrides Player State

   • When a video/composition is playing and I press A (jump to start), the player pauses instead of continuing playback
   • Similarly, pressing E (jump to end) while playing causes an unwanted pause
   • Expected behavior: The player should maintain its play/pause state when jumping with A or E
   • This currently differs from standard NLE player behavior, where playhead navigation preserves playback state

2. Canvas Zoom Reset Broken in Split-Screen

   • When the browser window is snapped to half the screen, clicking "reset zoom" on the canvas doesn't reset correctly
   • Instead of resetting to fill all available canvas space, it only resizes to half of the split view or resizes unpredictably
   • The zoom reset should work consistently regardless of window dimensions

Steps to reproduce

For bug 1 (Playhead Jump):

1. Open a composition in Studio
2. Press spacebar to start playback
3. While playing, press A to jump to start
4. Observe that playback pauses (should continue)

For bug 2 (Canvas Zoom Reset):

1. Snap browser window to half the screen (or use split-screen view)
2. Zoom or pan the canvas
3. Click "reset zoom" button
4. Observe incorrect resize behavior

Environment

✓ Version          0.6.46 (latest)
✓ Node.js          v22.22.2 (linux x64)
✓ CPU              4 cores · Intel(R) Core(TM) i5-7200U CPU @ 2.50GHz @ 3100MHz
✓ Memory           7.6 GB total · 2.7 GB free
✓ Disk             42.2 GB free
✓ /dev/shm         3907 MB
✓ Environment      Native terminal
✓ FFmpeg           ffmpeg version 6.1.1-3ubuntu5
✓ FFprobe          ffprobe version 6.1.1-3ubuntu5
✓ Chrome           cache: /home/anas/.cache/hyperframes/chrome/chrome-headless-shell/linux-131.0.6778.85/chrome-headless-shell-linux64/chrome-headless-shell
✓ Docker           Docker version 29.1.3, build 29.1.3-0ubuntu3~24.04.2
✗ Docker running   Not running
    Start Docker Desktop or run: sudo systemctl start docker
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