[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

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirBlackBoxCodegenBasedTestGenerated.java

@@ -38374,6 +38374,12 @@ public class LLFirBlackBoxCodegenBasedTestGenerated extends AbstractLLFirBlackBo
             runTest("compiler/testData/codegen/box/primitiveTypes/rangeTo.kt");
         }
 
+        @Test
+        @TestMetadata("reassignDestructured.kt")
+        public void testReassignDestructured() throws Exception {
+            runTest("compiler/testData/codegen/box/primitiveTypes/reassignDestructured.kt");
+        }
+
         @Test
         @TestMetadata("stringEqualsHashCodeToString.kt")
         public void testStringEqualsHashCodeToString() throws Exception {

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirReversedBlackBoxCodegenBasedTestGenerated.java

@@ -38374,6 +38374,12 @@ public class LLFirReversedBlackBoxCodegenBasedTestGenerated extends AbstractLLFi
             runTest("compiler/testData/codegen/box/primitiveTypes/rangeTo.kt");
         }
 
+        @Test
+        @TestMetadata("reassignDestructured.kt")
+        public void testReassignDestructured() throws Exception {
+            runTest("compiler/testData/codegen/box/primitiveTypes/reassignDestructured.kt");
+        }
+
         @Test
         @TestMetadata("stringEqualsHashCodeToString.kt")
         public void testStringEqualsHashCodeToString() throws Exception {