Add regression test for bug that caused histogram viewer to crash when removing datasets

[astrofrog]

This is a test for this bug: glue-viz/glue#2451 - as manifested in glue-jupyter (so no fix required here aside from updating the minimum required version of glue-core)

[codecov]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (e973b88) 86.61% compared to head (32e0700) 86.60%.
Report is 2 commits behind head on main.

❗ Current head 32e0700 differs from pull request most recent head 04b4844. Consider uploading reports for the commit 04b4844 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #407      +/-   ##
==========================================
- Coverage   86.61%   86.60%   -0.02%     
==========================================
  Files          89       89              
  Lines        5140     5142       +2     
==========================================
+ Hits         4452     4453       +1     
- Misses        688      689       +1     

Files	Coverage Δ
glue_jupyter/bqplot/histogram/tests/test_viewer.py	94.00% <76.92%> (-6.00%)	⬇️

... and 1 file with indirect coverage changes

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