Expand description of generic recursions

[MichalStrehovsky]

Addresses dotnet/runtime#85184 (comment).

Cc @dotnet/ilc-contrib

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docs/core/deploying/native-aot/warnings/il3054.md	IL3054: Generic expansion to a method or type was aborted due to generic recursion

[benjamin-hodgson]

Thanks for doing this!

Could be worth noting that this can happen even in non-recursive contexts too? The repro from the issue didn't feature recursion - just a "bigger" return type

[MichalStrehovsky]

Could be worth noting that this can happen even in non-recursive contexts too? The repro from the dotnet/runtime#85184 didn't feature recursion - just a "bigger" return type

I don't know how to word it without having to go into too many implementation details. It's still recursion, but with extra steps (the G() method on the newly allocated instance needs to be callable and that's where the recursion is). The compiler has to consider things that are statically reachable but may or may not be reached at runtime.