error when using celltype filter (and neighbors graph links?)

[rheiland]

When we have two cell types and try to Apply the filter to hide plotting one cell type (see screenshot), we get an error:

---- vis_base: filterUI_cb()
QLayout::addChildLayout: layout "" already has a parent
view2D_cb():  Plot options
Traceback (most recent call last):
  File "/Users/heiland/miniconda3/lib/python3.12/site-packages/pandas/core/indexes/base.py", line 3805, in get_loc
    return self._engine.get_loc(casted_key)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "index.pyx", line 167, in pandas._libs.index.IndexEngine.get_loc
  File "index.pyx", line 196, in pandas._libs.index.IndexEngine.get_loc
  File "pandas/_libs/hashtable_class_helper.pxi", line 1698, in pandas._libs.hashtable.Float64HashTable.get_item
  File "pandas/_libs/hashtable_class_helper.pxi", line 1722, in pandas._libs.hashtable.Float64HashTable.get_item
KeyError: 1.0

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/Users/heiland/git/studio_dev/bin/vis_base.py", line 1144, in apply_filters
    self.update_plots()
  File "/Users/heiland/git/studio_dev/bin/vis_tab.py", line 348, in update_plots
    self.ax0.plot([xvals[c1], xvals[c2]], [yvals[c1], yvals[c2]], 'k-', lw=0.5)
                              ~~~~~^^^^
  File "/Users/heiland/miniconda3/lib/python3.12/site-packages/pandas/core/series.py", line 1121, in __getitem__
    return self._get_value(key)
           ^^^^^^^^^^^^^^^^^^^^
  File "/Users/heiland/miniconda3/lib/python3.12/site-packages/pandas/core/series.py", line 1237, in _get_value
    loc = self.index.get_loc(label)
          ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/heiland/miniconda3/lib/python3.12/site-packages/pandas/core/indexes/base.py", line 3812, in get_loc
    raise KeyError(key) from err
KeyError: 1
Abort trap: 6