Bugfix: Check the squeezed data for scale vals

[psobolewskiPhD]

This is a fix for: #54
(see also: https://forum.image.sc/t/napari-napari-aicsimageio-faild-to-open-ome-tiff/68942/2?u=sebi06)
Basically, when setting the scale metadata for napari, the original img was used, even if a singleton was squeezed. If the singleton happened to have a valid scale value, this was passed to napari, even though the dimension wasn't.
The fix here checks the physical dims of the actual squeezed xarray data for scale data, so if a dim was squeezed, but had valid scale, it will be ignored.

Pull request recommendations:

• Name your pull request your-development-type/short-description. Ex: feature/read-tiff-files
• Link to any relevant issue in the PR description. Ex: Resolves [admin/build-py39 #12], adds tiff file format support
• Provide context of changes.
• Provide relevant tests for your feature or bug fix. I think the file from @sebi06 would have failed tests previously, because the read scale meta (z, y, x) would not match expected (y, x). And obviously napari doesn't like the layer data that is passed.
• Provide or update documentation for any feature added by your pull request.

[codecov-commenter]

Codecov Report

Merging #60 (b7e8e90) into main (a7aad09) will increase coverage by 0.94%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #60      +/-   ##
==========================================
+ Coverage   87.93%   88.88%   +0.94%     
==========================================
  Files           4        3       -1     
  Lines         199      189      -10     
==========================================
- Hits          175      168       -7     
+ Misses         24       21       -3     

Impacted Files	Coverage Δ
napari_aicsimageio/core.py	86.15% <100.00%> (ø)
napari_aicsimageio/__init__.py

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[evamaxfield]

I assume lint is fixed due to the other PR. Merging! Thanks!