Put default value (null or zero) to slot for uninitialized values

This way range of the variable is correct in LVT.
 #KT-24672 Fixed

compiler/testData/codegen/bytecodeText/localInitializationLVT/inlineClass.kt

@@ -0,0 +1,12 @@
+// IGNORE_BACKEND: JVM_IR
+
+fun test(): UInt {
+    val c: UInt
+    run {
+        c = 1u
+    }
+    return c
+}
+
+// 2 ISTORE 0
+// 1 LOCALVARIABLE c I L1 L10 0