[enhancement]: Revert or make optional the separate display of "Layers" and "Gallery" tabs in the right panel

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Contact Details

_No response_

### What should this feature add?

Please bring back or make optional the separate display of the "Layers" and "Gallery" tabs in the right panel.

The current implementation might be useful on 2K or 4K monitors, but on regular FullHD displays it's too cluttered, making it very difficult to work with layers as you constantly have to drag them up and down - causing more inconvenience than benefits.

### Alternatives

_No response_

### Additional Content

_No response_