fix 38000: duplicate call getAttributeOptions

[rogerdz]

Description (*)

Related Pull Requests

Fixed Issues (if relevant)

1. Fixes Configuable product: duplicate get attribute options #38000

Manual testing scenarios (*)

1. ...
2. ...

Questions or comments

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[rogerdz]

@magento run all tests

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[rogerdz]

@magento run WebAPI Tests, Integration Tests, Functional Tests CE, Functional Tests B2B

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[hostep]

This should be marked as private instead of protected right?
If classes extend from this one (which is against Magento's policy) they'll need to call the public function to get the value, not use this property.
There is no good reason (unless I'm missing something) to expose this property to classes that extend from this one, right?