JVM_IR: Do not add redundant field initializers.

Initializers are "set field" expressions and are considered redundant
when they are:
1. In the primary constructor; and
2. Set the field to `0`, `false`, or `null`; and
3. Have a `null` origin. I.e., not in an initializer block or
constructor body, and therefore the field could not have been set by a
prior expression.

compiler/tests/org/jetbrains/kotlin/codegen/BytecodeTextTestGenerated.java

@@ -329,6 +329,11 @@ public class BytecodeTextTestGenerated extends AbstractBytecodeTextTest {
         runTest("compiler/testData/codegen/bytecodeText/redundantInitializerNumber.kt");
     }
 
+    @TestMetadata("redundantValInitializer.kt")
+    public void testRedundantValInitializer() throws Exception {
+        runTest("compiler/testData/codegen/bytecodeText/redundantValInitializer.kt");
+    }
+
     @TestMetadata("reifiedAsCheck.kt")
     public void testReifiedAsCheck() throws Exception {
         runTest("compiler/testData/codegen/bytecodeText/reifiedAsCheck.kt");