Fix resizers

[ericpre]

Fix #3213.

Progress of the PR

• Check if reziser patches are drawn before removing them,,
• Don't display resizers when adding the widget to the figure (widget not selected) for consistency with unselected state,
• [n/a] update docstring (if appropriate),
• [n/a] update user guide (if appropriate),
• add an changelog entry in the upcoming_changes folder (see upcoming_changes/README.rst),
• Check formatting changelog entry in the readthedocs doc build of this PR (link in github checks)
• add tests,
• ready for review.

[codecov]

Codecov Report

Patch coverage: 83.33% and project coverage change: +0.03% 🎉

Comparison is base (24d9a39) 81.27% compared to head (d694e39) 81.31%.

Additional details and impacted files

@@                  Coverage Diff                   @@
##           RELEASE_next_major    #3222      +/-   ##
======================================================
+ Coverage               81.27%   81.31%   +0.03%     
======================================================
  Files                     173      173              
  Lines                   24204    24206       +2     
  Branches                 5622     5623       +1     
======================================================
+ Hits                    19672    19683      +11     
+ Misses                   3233     3223      -10     
- Partials                 1299     1300       +1     

Files Changed	Coverage Δ
hyperspy/drawing/widget.py	73.19% <80.00%> (+1.76%)	⬆️
hyperspy/misc/test_utils.py	90.41% <100.00%> (+0.13%)	⬆️

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