move operator assignment check for object to javac quirks inspection with fix (IDEA-154209)

java/java-tests/testSrc/com/intellij/codeInsight/daemon/LightAdvHighlightingJdk6Test.java

@@ -61,4 +61,8 @@ public class LightAdvHighlightingJdk6Test extends LightDaemonAnalyzerTestCase {
   public void testUnreachableAssignments() { doTest(false, false); }
   public void testCompileTypeConstantsAccessibleFromStaticFieldInitializers() { doTest(false, false);}
   public void testInheritUnrelatedConcreteMethodsWithSameSignature() { doTest(false, false);}
+
+  public void testAssignmentFromStringToObject() {
+    doTest(true, false);
+  }
 }