Fix sensitive path mapping

[turkenh]

Description of your changes

We incorrectly used fieldName.LowerCamel in sensitive field mapping which takes acronyms here into account. However, we should use fieldName.LowerCamelComputed instead since we don't use acronyms with fields names.

Fixes #251

I have:

• [x] Read and followed Crossplane's contribution process.
• [x] Run make reviewable to ensure this PR is ready for review.
• [x] Added backport release-x.y labels to auto-backport this PR if necessary.

How has this code been tested

Using provider-jet-vault, run make generate.

[github-actions[bot]]

Successfully created backport PR #256 for release-0.4.