BUG: Home after markers no longer crash Imviz

[pllim]

Description

This pull request is to prevent crashing in Imviz when Home is clicked on after markers are added.

Fixes #1964

Change log entry

• Is a change log needed? If yes, is it added to CHANGES.rst? If you want to avoid merge conflicts,
  list the proposed change log here for review and add to CHANGES.rst before merge. If no, maintainer
  should add a no-changelog-entry-needed label.

Checklist for package maintainer(s)

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• Are two approvals required? Branch protection rule does not check for the second approval. If a second approval is not necessary, please apply the trivial label.
• Do the proposed changes actually accomplish desired goals? Also manually run the affected example notebooks, if necessary.
• Do the proposed changes follow the STScI Style Guides?
• Are tests added/updated as required? If so, do they follow the STScI Style Guides?
• Are docs added/updated as required? If so, do they follow the STScI Style Guides?
• Did the CI pass? If not, are the failures related?
• Is a milestone set? Set this to bugfix milestone if this is a bug fix and needs to be released ASAP; otherwise, set this to the next major release milestone.
• After merge, any internal documentations need updating (e.g., JIRA, Innerspace)?

[codecov]

Codecov Report

Base: 91.93% // Head: 91.94% // Increases project coverage by +0.00% 🎉

Coverage data is based on head (8b0ff3b) compared to base (8f8106b).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1971   +/-   ##
=======================================
  Coverage   91.93%   91.94%           
=======================================
  Files         140      140           
  Lines       15310    15311    +1     
=======================================
+ Hits        14076    14078    +2     
+ Misses       1234     1233    -1     

Impacted Files	Coverage Δ
...daviz/configs/imviz/tests/test_astrowidgets_api.py	98.58% <100.00%> (+<0.01%)	⬆️
jdaviz/core/freezable_state.py	91.66% <100.00%> (+1.38%)	⬆️

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[pllim]

For the record, I did confirm locally that this test fails on main without this patch.

[camipacifici]

Works! Thank you!

[kecnry]

Elegant fix, thanks!

(Failure seems unrelated, but I started the failed job to try to get CI green)

[pllim]

The dev failure is unrelated. I thought numpy-dev fixed that __code__ stuff already, but not our problem regardless.

Thanks for the reviews!