Fix navigation_mask decomposition

[ericpre]

Fixes #2677. When passing a numpy array for the navigation_mask argument of decomposition, the array was missing a transpose operation. Passing hyperspy signal is working fine.

Progress of the PR

• Fix plotting boolean array (didn't play well with auto contrast).
• add entry to CHANGES.rst (if appropriate),
• add tests,
• ready for review.

Minimal example of the bug fix.

[codecov]

Codecov Report

Merging #2679 (9d3c546) into RELEASE_next_patch (d4d3dcb) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@                  Coverage Diff                   @@
##           RELEASE_next_patch    #2679      +/-   ##
======================================================
+ Coverage               76.66%   76.67%   +0.01%     
======================================================
  Files                     201      201              
  Lines                   29666    29670       +4     
  Branches                 6495     6496       +1     
======================================================
+ Hits                    22743    22750       +7     
+ Misses                   5168     5167       -1     
+ Partials                 1755     1753       -2     

Impacted Files	Coverage Δ
hyperspy/drawing/image.py	72.63% <100.00%> (+0.20%)	⬆️
hyperspy/learn/mva.py	82.92% <100.00%> (+0.30%)	⬆️

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[jlaehne]

LGTM