Fix members not being marked as inherited in sidebars - Fixes #2472

[parlough]

Inherited issue:
This switches to sharing the sections with inherited features between class and enum.

Fixes #2472

Operator issue:

Handling of checking if all instance operators are inherited was messed up, resulting in the operators section always being marked as inherited(multiple times in fact) and being italicized. This standardizes it to match the behavior of methods.

The second commit addresses this issue.

[jcollins-g]

Great work! Please add at least a test for the publicInheritedInstanceOperators method. I think an end-to-end verification is probably redundant but optionally you could add that as well to double-check rendering.

[parlough]

Great work! Please add at least a test for the publicInheritedInstanceOperators method. I think an end-to-end verification is probably redundant but optionally you could add that as well to double-check rendering.

Thanks for the feedback! I'll address the desired changes and add the tests sometime later today.

[parlough]

@jcollins-g I believe I have addressed your raised issues as well as added some small tests. Let me know if you'd like to see any other changes. Thanks 🥇

[jcollins-g]

approved, will land once green.