x/tools/gopls: "unexpected type object" renaming type parameters

[findleyr]

Forked from #61614, where renaming type parameters doesn't work for valid code. I'll fix.

[findleyr]

The example in question:

type builder[S ~[]F, F ~string] struct {
	name string
	elements S
	elemData map[F][]ElemData[F]
	// other fields...
}
type ElemData[F ~string] struct {
  Name F
  // other fields...
}
type BuilderImpl[S ~[]F, F ~string] struct{ builder[S, F] }

Renaming S->T works in a small package, but fails in a larger package (some sort of satisfy bug?), it works on a minimal package. Error message:

[Error - Received] 09:29:05.579 AM #83 regtest/marker.go:44:14: unexpected type object "type parameter S ~[]F" (please report a bug)

[gopherbot]

Change https://go.dev/cl/513916 mentions this issue: gopls/inernal/lsp/source: fix renaming of type parameters