[FIR2IR] Always use property type if var

For destructing calls, the component type is used for the property type
in all cases. However, this can result in runtime and/or compilation
errors when the property is a var and changed, especially when the
component is a primitive but the property type is nullable. Instead,
only use the component type when the property is also a val.

^KT-64944 Fixed

compiler/tests-gen/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java

@@ -31907,6 +31907,11 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
             runTest("compiler/testData/codegen/box/primitiveTypes/rangeTo.kt");
         }
 
+        @TestMetadata("reassignDestructured.kt")
+        public void testReassignDestructured() throws Exception {
+            runTest("compiler/testData/codegen/box/primitiveTypes/reassignDestructured.kt");
+        }
+
         @TestMetadata("stringEqualsHashCodeToString.kt")
         public void testStringEqualsHashCodeToString() throws Exception {
             runTest("compiler/testData/codegen/box/primitiveTypes/stringEqualsHashCodeToString.kt");