Refactoring + minor fixes: destructure intention

idea/testData/intentions/destructuringVariables/withModifiers.kt.after

@@ -0,0 +1,10 @@
+data class XY(val x: Int, val y: Int)
+
+fun create() = XY(1, 2)
+
+annotation class Ann
+
+fun use(): Int {
+    @Ann val (x, y) = create()
+    return x + y
+}