Add support for code navigation for generic type aliases

[varungandhi-src]

From https://tip.golang.org/doc/go1.23

Go 1.23 includes preview support for generic type aliases. Building the toolchain with GOEXPERIMENT=aliastypeparams enables this feature.

We need to make sure we handle code navigation for generic parameters in type aliases correctly.

[varungandhi-src]

This is going to be supported in Go 1.24, we need an update for that...