Add test for KT-17479 looks like #KT-17479 Fixed

(after CAPTURED_MEMBER_VAL_INITIALIZATION introduction)

compiler/testData/diagnostics/tests/controlFlowAnalysis/initializationInLocalViaExplicitThis.kt

@@ -0,0 +1,17 @@
+// See KT-17479
+
+class Test {
+    val str: String
+    init {
+        run {
+            <!CAPTURED_MEMBER_VAL_INITIALIZATION!>this@Test.str<!> = "A"
+        }
+
+        run {
+            // Not sure do we need diagnostic also here
+            this@Test.str = "B"
+        }
+
+        str = "C"
+    }
+}