Increase UMAP fullscreen controlsHeight to prevent overlap with bottom panels

[Copilot]

PR #170 added two radio buttons to the UMAP controls section, increasing its height. In fullscreen mode, the plot now overlaps the ControlPanel and SearchPanel at the bottom of the screen.

Changes

• Increased controlsHeight from 180px to 230px in setUmapWindowSize()
• Added inline comment documenting the height allocation:
  • ~120px for UMAP controls (EPS spinner + 2 radio buttons + 4 checkboxes)
  • ~110px clearance for bottom panels

// Before
const controlsHeight = 180;

// After  
// controlsHeight: space reserved below plot for UMAP controls (~120px with radio buttons)
// plus clearance for bottom ControlPanel/SearchPanel (~110px)
const controlsHeight = 230;

The calculation plotDiv.style.height = window.innerHeight - controlsHeight now leaves adequate space below the plot for both the UMAP controls and the fixed bottom panels.

Narrow screens (≤600px) use a different layout and are unaffected.

Original prompt

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This section details on the original issue you should resolve

<issue_title>Prevent full-screen umap window from overlapping with ControlPanel element</issue_title>
<issue_description>The most recent commits added two stacked radio buttons to the umap window. Unfortunately this causes the window to increase in height and makes it partially overlap the ControlPanel and SearchPanel elements. Please recalculate the height of the umap window so that there is no overlap with these two elements when it is in full-screen mode.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Prevent full-screen umap window from overlapping with ControlPanel element #173

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