Recognize more JSpecify annotations as type-use:

- the `@Nullable` from the new package
- `@NonNull` from both packages, even though it appeared in the old package only very briefly

Note that there's no case in which it would make sense to use our existing refactorings to insert `@NonNull`. But that may change, and I figured I might as well address it while I was here.

PiperOrigin-RevId: 529824478

core/src/main/java/com/google/errorprone/bugpatterns/nullness/NullnessUtils.java

@@ -375,6 +375,9 @@ private static boolean isTypeUse(String className) {
       case "libcore.util.Nullable":
       case "org.checkerframework.checker.nullness.compatqual.NullableType":
       case "org.checkerframework.checker.nullness.qual.Nullable":
+      case "org.jspecify.annotations.NonNull":
+      case "org.jspecify.annotations.Nullable":
+      case "org.jspecify.nullness.NonNull":
       case "org.jspecify.nullness.Nullable":
         return true;
       default: