Fix module inlay hint source positions

[Frotty]

Summary

• skip compiler-generated module instantiation bodies when collecting inlay hints
• require hinted arguments to have concrete source positions in the requested document
• add a regression test for hints leaking from an imported module onto blank lines

Root cause

Module expansion grafts copied module bodies beneath classes that use them. The copied expressions retain the module definition's line and column, while an LSP position carries no filename. Those coordinates were therefore interpreted as positions in the consuming document, producing hints on unrelated or empty lines.

Impact

Classes using modules no longer display parameter hints originating from generated module copies. Normal source-level parameter hints remain unchanged.

Validation

• ./gradlew.bat test --tests "tests.wurstscript.tests.LspNativeFeaturesTests.inlayHintsIgnoreCopiedModuleBodyFromAnotherFile"
• ./gradlew.bat test --tests "tests.wurstscript.tests.LspNativeFeaturesTests"
• git diff --check