fix: hide internal well comments from public users

[raarielgrace]

Description

Bug fix in FE where the wrong key was being checked. Feature change in the BE to add internal_comments to the fields that the API returns, but to only return it conditionally. Users with the well_view role are able to see it.

Fixes # 190

Type of change

• [x] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)

How Has This Been Tested?

• Added tests to test_wells.py
• Manually tested locally

Checklist

• [x] I have read the CONTRIBUTING doc
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] I have added tests that prove my fix is effective or that my feature works
• [ ] New and existing unit tests pass locally with my changes
• [x] Any dependent changes have already been accepted and merged

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