[LL FIR] KTIJ-24574 Fix containing declaration finder for init blocks

- KTIJ-24574 occurred because a local destructuring declaration was
  erroneously returned as the non-local containing declaration of an
  element by `getNonLocalContainingOrThisDeclaration`. This occurred in
  `init` blocks.

KTIJ-24574 fixed

analysis/analysis-api/testData/referenceResolve/DestructuringDeclarationInInit.kt

@@ -0,0 +1,11 @@
+var x: Any = 2
+
+class Test {
+    init {
+        val (type, entityName) = when {
+            x is Int -> Int::class.java to "Int"
+            <caret>x is String -> String::class.java to "String"
+            else -> null to null
+        }
+    }
+}