Fix parent and containingFile for throws-reference list

Otherwise, exception is thrown during type inference
because default implementations effectively return null

^KT-29287 Fixed

idea/testData/kotlinAndJavaChecker/javaAgainstKotlin/ThrowsOnGenericMethod.java

@@ -0,0 +1,8 @@
+package test;
+import foo.A;
+
+public class ThrowsOnGenericMethod {
+    public static void main(String[] args) {
+        new A().<error descr="Unhandled exception: java.io.IOException">foo</error>("");
+    }
+}

idea/testData/kotlinAndJavaChecker/javaAgainstKotlin/ThrowsOnGenericMethod.kt

@@ -0,0 +1,9 @@
+package foo;
+import java.io.IOException
+
+class A {
+    @Throws(IOException::class)
+    fun <E> foo(y: E) {}
+}
+
+// ALLOW_AST_ACCESS

idea/testData/kotlinAndJavaChecker/javaAgainstKotlin/ThrowsOnGenericMethod.txt

@@ -0,0 +1 @@
+// WITH_RUNTIME