"Use destructuring declaration": fix it works correctly if variable name is shadowed

#KT-30601 Fixed
#KT-20570 Fixed

idea/testData/intentions/destructuringVariables/hasShadowedVariable.kt

@@ -0,0 +1,12 @@
+// WITH_RUNTIME
+fun main() {
+    data class A(var x: Int)
+
+    val <caret>a = A(0)
+    val x = a.x
+
+    run {
+        val x = 1
+        val z = a.x
+    }
+}

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

@@ -0,0 +1,11 @@
+// WITH_RUNTIME
+fun main() {
+    data class A(var x: Int)
+
+    val (x1) = A(0)
+
+    run {
+        val x = 1
+        val z = x1
+    }
+}