lightClassUtils: Fix CCE when trying to obtain KtLightTypeParameter

#KT-12259 Fixed

compiler/light-classes/src/org/jetbrains/kotlin/asJava/lightClassUtils.kt

@@ -104,7 +104,7 @@ fun KtTypeParameter.toPsiTypeParameters(): List<PsiTypeParameter> {
     val jetDeclaration = paramList.getNonStrictParentOfType<KtDeclaration>() ?: return listOf()
     val lightOwners = jetDeclaration.toLightElements()
 
-    return lightOwners.map { lightOwner -> (lightOwner as PsiTypeParameterListOwner).typeParameters[paramIndex] }
+    return lightOwners.mapNotNull { lightOwner -> (lightOwner as? PsiTypeParameterListOwner)?.typeParameters?.get(paramIndex) }
 }
 
 // Returns original declaration if given PsiElement is a Kotlin light element, and element itself otherwise

idea/testData/findUsages/kotlin/findTypeParameterUsages/propertyWithTypeParameter.0.kt

@@ -0,0 +1,2 @@
+// PSI_ELEMENT: org.jetbrains.kotlin.psi.KtTypeParameter
+val <T<caret>> foo: T

idea/testData/findUsages/kotlin/findTypeParameterUsages/propertyWithTypeParameter.results.txt

@@ -0,0 +1 @@
+Class/object property type 2 val <T> foo: T

idea/tests/org/jetbrains/kotlin/findUsages/FindUsagesTestGenerated.java

@@ -1079,6 +1079,12 @@ public class FindUsagesTestGenerated extends AbstractFindUsagesTest {
                 String fileName = KotlinTestUtils.navigationMetadata("idea/testData/findUsages/kotlin/findTypeParameterUsages/kotlinFunctionTypeParameterUsages.0.kt");
                 doTest(fileName);
             }
+
+            @TestMetadata("propertyWithTypeParameter.0.kt")
+            public void testPropertyWithTypeParameter() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("idea/testData/findUsages/kotlin/findTypeParameterUsages/propertyWithTypeParameter.0.kt");
+                doTest(fileName);
+            }
         }
 
         @TestMetadata("idea/testData/findUsages/kotlin/findWithFilteringImports")