[java-inspections] UseHashCodeMethodInspection: support double type

Also: fix comment processing
Improvement of IDEA-338114

GitOrigin-RevId: 87d057ccbea4262c40e2717c2ea3c004ac9865b0

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/useHashCode/afterBoxed.java

@@ -3,6 +3,7 @@ public class Test {
   Long var = 1234567890123456789L;
 
   public void testMethod() {
-    int result = var.hashCode();
+      /*shift amount*/
+      int result = var.hashCode();
   }
 }