Fix Internal error when analysing incomplete inherit member

[edgarfgp]

Description

Fixes#17902

Checklist

• Test cases added
• Release notes entry updated

[github-actions]

❗ Release notes required

---

✅ Found changes and release notes in following paths:

Change path	Release notes path	Description
src/Compiler	docs/release-notes/.FSharp.Compiler.Service/9.0.200.md

[brianrourkeboll]

Style nit: I generally think keeping pattern matching flat where possible (instead of adding nested match expressions) makes the top-level match easier to understand, but feel free to ignore if you disagree.

[edgarfgp]

@psfinaki Sorry to bother you again. Could you help me update the last salsa test https://dev.azure.com/dnceng-public/public/_build/results?buildId=850191&view=ms.vss-test-web.build-test-results-tab&runId=22075436&resultId=108303&paneView=debug. Trying to do it using the CI is really painful :(

[psfinaki]

@edgarfgp there you go (hopefully), pushed to your branch. You cannot want the same thing to be both expected and unexpected in the list of completions :)

Judging by the name of the test, I think this PR decreases the amount of contexts without completions - for better or worse.

[edgarfgp]

This is ready

[psfinaki]

Thanks for the quick fix!