[AA] Add KtTestModule.moduleKind

- `TestModule.explicitTestModuleKind` requires a directive to be present
  to get the `TestModuleKind`. But we still want to find out the test
  module kind for test modules without a directive. Hence, we have to
  add this property to `KtTestModule` during its construction.

^KT-65960

analysis/analysis-api-fe10/tests/org/jetbrains/kotlin/analysis/api/fe10/test/configurator/AnalysisApiFe10TestConfiguratorFactory.kt

@@ -36,7 +36,8 @@ object AnalysisApiFe10TestConfiguratorFactory : AnalysisApiTestConfiguratorFacto
                 TestModuleKind.ScriptSource,
                 TestModuleKind.LibraryBinary,
                 TestModuleKind.LibrarySource,
-                TestModuleKind.CodeFragment -> {
+                TestModuleKind.CodeFragment,
+                TestModuleKind.NotUnderContentRoot -> {
                     false
                 }
             }