Exported package types sometimes do not work

[niko284]

When running wally-package-types --sourcemap sourcemap.json Packages/, there's a possibility that exported package types are not read properly, showing error-type on Luau-LSP. From testing, wally packages like Sift have proper intellisense, while the Net package does not.

This happens on v1.9.0. Older versions seem to work fine.

[JohnnyMorganz]

For net, setting LuauTarjanChildLimit FFlag to 0 resolves this issue.

There seems to be something hitting a limit internally in Luau

[JohnnyMorganz]

Going to fold this into #112 as a duplicate