extract light method object: complete array initializer with first element type (IDEA-131435)

(cherry picked from commit 2b66700cb40889d0578426a0ddca6fb0b02f2718)

java/java-tests/testData/refactoring/extractMethodObject4Debugger/ArrayInitializer.java

@@ -0,0 +1,5 @@
+class Sample {
+  void foo() {
+    Runnable[] runs = {<caret>};
+  }
+}