[Tests] Do not add .java-files of whole project to contentScope in K2

Previously, the code was calling into
TopDownAnalyzerFacadeForJVM.newModuleSearchScope, which includes
AllJavaSourcesInProjectScope.

This lead to .java-sources being incorrectly attributed to wrong
modules in tests, which, in turn, could've introduced undesired
behaviour around module-dependent checks (e.g. whether a variable
is from the other module and thus can't be smartcasted)

analysis/analysis-test-framework/tests/org/jetbrains/kotlin/analysis/test/framework/project/structure/KtSourceModuleByCompilerConfiguration.kt

@@ -125,7 +125,7 @@ class KtSourceModuleByCompilerConfiguration(
     override val ktModule: KtModule get() = this
 
     override val contentScope: GlobalSearchScope =
-        TopDownAnalyzerFacadeForJVM.newModuleSearchScope(project, psiFiles.filterIsInstance<KtFile>())
+        GlobalSearchScope.filesScope(project, psiFiles.map { it.virtualFile })
 }
 
 class KtScriptModuleByCompilerConfiguration(