Release notes

Author: auduchinok

Diff for: docs/release-notes/.FSharp.Compiler.Service/9.0.100.md

@@ -12,6 +12,7 @@
 * Parser: recover on missing union case fields (PR [#17452](https://github.com/dotnet/fsharp/pull/17452))
 * Parser: recover on missing union case field types (PR [#17455](https://github.com/dotnet/fsharp/pull/17455))
 * Sink: report function domain type ([PR #17470](https://github.com/dotnet/fsharp/pull/17470))
+* Symbols: add Mfv.ApparentEnclosingType ([#17494](https://github.com/dotnet/fsharp/pull/17494))
 
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