Parser: recover on unfinished cons patterns

[auduchinok]

Adds recovery on unfinished list construction patterns:

match () with
| _ ::

match () with
| _ :: -> ()

[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/8.0.400.md

[psfinaki]

Thanks! (don't forget the release notes :) )