Limit the max height of the track

### Problem to be solved

The limitless track height which causes the waveform to disappear beyond a certain point.

### Your idea

Limit the max track height to the height of the track area.

If the window gets shrunk after resizing, that's fine, the height limit only needs to be checked when explicitly resizing a track.

### Prior art

_No response_

### Additional context

_No response_

No files, tests, or entry points are named. Locate the code handling explicit track resizing and the track-area height, then verify that resizing cannot exceed the track area and that the waveform remains visible; the height limit need not react to later window shrinking.

Written by the indexing model from the issue text.