Fix navigation to script dependency sources failing

Specifically in case where some lib is in project and script dependencies at the same time

idea/testData/script/definition/navigation/conflictingModule/script.kts

@@ -0,0 +1,7 @@
+test.KObject.<caret>foo()
+
+// DEPENDENCIES: classpath:lib-classes; sources:lib-source
+// CONFLICTING_MODULE
+
+// REF: (in test.KObject).foo()
+// FILE: test/custom.kt