preserve ranges in result of UnsolvedTyparsOfModuleDef to help with warnings #15243
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This is an attempt to help with #14653 and by that unblocking #13298
Edit:
Currently, it's difficult to show the effect of this PR in a test as it works on very internal things.
But if you debug the following test:
and set a breakpoint on
fsharp/src/Compiler/Checking/FindUnsolved.fs
Line 38 in e8e9aea
you can see the effect.
As already mentioned, this tries to unblock #13298 and makes most sense in combination with that.