Patching fails with DataFrame that don't have a monotonic range

[maximlt]

Patching a Tabulator widget with a DataFrame whose index isn't the usual monotonic integer 0, 1, 2, etc. isn't supported.

import numpy as np
import pandas as pd
import panel as pn

pn.extension('tabulator')

df = pd.DataFrame(
    index=[10, 50, 100],
    data=dict(
        A=list(range(3)),
        B=list('abc'),
))
w = pn.widgets.Tabulator(df)
w.patch(df)

Traceback:

ValueError                                Traceback (most recent call last)
Cell In[10], line 1
----> 1 w.patch(df)

File ~/dev/panel/panel/widgets/tables.py:796, in BaseTable.patch(self, patch_value, as_index)
    792 if isinstance(patch_value, pd.DataFrame):
    793     patch_value_dict = {
    794         column: list(patch_value[column].items()) for column in patch_value.columns
    795     }
--> 796     self.patch(patch_value_dict, as_index=as_index)
    797 elif isinstance(patch_value, pd.Series):
    798     if "index" in patch_value:  # Series orient is row

File ~/dev/panel/panel/widgets/tables.py:816, in BaseTable.patch(self, patch_value, as_index)
    814             else:
    815                 self.value.iloc[ind, columns.index(k)] = value
--> 816     self._patch(patch_value)
    817 else:
    818     raise ValueError(
    819         f"Patching with a patch_value of type {type(patch_value).__name__} "
    820         "is not supported. Please provide a DataFrame, Series or Dict."
    821     )

File ~/dev/panel/panel/util/__init__.py:380, in updating.<locals>.wrapped(self, *args, **kwargs)
    378 self._updating = True
    379 try:
--> 380     fn(self, *args, **kwargs)
    381 finally:
    382     self._updating = updating

File ~/dev/panel/panel/widgets/tables.py:1476, in Tabulator._patch(self, patch)
   1474 if not patch:
   1475     return
-> 1476 super()._patch(patch)
   1477 self._update_style()
   1478 self._update_selectable()

File ~/dev/panel/panel/util/__init__.py:380, in updating.<locals>.wrapped(self, *args, **kwargs)
    378 self._updating = True
    379 try:
--> 380     fn(self, *args, **kwargs)
    381 finally:
    382     self._updating = updating

File ~/dev/panel/panel/reactive.py:954, in SyncableData._patch(self, patch)
    952 if comm or not doc.session_context or state._unblocked(doc):
    953     with unlocked():
--> 954         m.source.patch(patch)
    955     if comm and 'embedded' not in root.tags:
    956         push(doc, comm)

File ~/miniconda3/envs/panel38/lib/python3.8/site-packages/bokeh/models/sources.py:681, in ColumnDataSource.patch(self, patches, setter)
    679 if isinstance(ind, int):
    680     if ind > col_len or ind < 0:
--> 681         raise ValueError("Out-of bounds index (%d) in patch for column: %s" % (ind, name))
    683 # slice index, patch multiple values of 1d column
    684 elif isinstance(ind, slice):

ValueError: Out-of bounds index (10) in patch for column: A