fix: is same orientation

[pedrokohler]

Context

This statement as it was doesn't even make any sense in Javascript: if you negate anything it will never result in undefined, ever. It will always be true or false.

So the second check is useless, and thus this is definitely wrong.

Also this will result in false negatives that may crash the application when the program tries to access properties of undefined if iop2 is indeed undefined.

Changes & Results

Testing

Checklist

PR

• [] My Pull Request title is descriptive, accurate and follows the
  semantic-release format and guidelines.

Code

• [] My code has been well-documented (function documentation, inline comments,
  etc.)

Public Documentation Updates

• [] The documentation page has been updated as necessary for any public API
  additions or removals.

Tested Environment

• [] OS:
• [] Node version:
• [] Browser:

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (8a335bd) 46.23% compared to head (4b2c199) 44.44%.
Report is 218 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3905      +/-   ##
==========================================
- Coverage   46.23%   44.44%   -1.80%     
==========================================
  Files          78       80       +2     
  Lines        1276     1332      +56     
  Branches      312      327      +15     
==========================================
+ Hits          590      592       +2     
- Misses        548      587      +39     
- Partials      138      153      +15     

Files	Coverage Δ
platform/app/src/routes/WorkList/filtersMeta.js	0.00% <ø> (ø)
platform/core/src/log.js	14.28% <ø> (-85.72%)	⬇️
...ervices/DicomMetadataStore/createSeriesMetadata.js	0.00% <ø> (ø)
...services/DicomMetadataStore/createStudyMetadata.js	0.00% <ø> (ø)
platform/core/src/utils/addAccessors.js	9.09% <ø> (ø)
platform/core/src/utils/downloadCSVReport.js	0.00% <ø> (ø)
platform/core/src/utils/formatDate.js	0.00% <ø> (ø)
platform/core/src/utils/index.js	100.00% <ø> (ø)
...form/core/src/utils/isDisplaySetReconstructable.js	5.00% <ø> (+0.18%)	⬆️
...ils/metadataProvider/getPixelSpacingInformation.js	0.00% <ø> (ø)

... and 1 file with indirect coverage changes

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