Improve: add more cases for MoveVariableDeclarationIntoWhen

#KT-30499 Fixed

idea/testData/inspectionsLocal/moveVariableDeclarationIntoWhen/inProperty.kt

@@ -0,0 +1,9 @@
+fun test() = 42
+
+fun foo() {
+    val a<caret> = test()
+    val b = when (a) {
+        1 -> a
+        else -> 24
+    }
+}