If you passed the patent bar before joining the PTO, it would definitely help your work, but probably not help much in getting you to the higher GS level.
1 bit of secret is that you might not want to be GS-11. Generally, even if you get offered GS-11, they would start you off at very low pay step level, probably step 2 for GS-11. Whereas if you get offered GS-9 with the same experience, they would probably start you off at high pay step end, probably step 7 or 8 for GS9. It's almost always better to take the GS9, because it will actually pay more, with less production requirement. The only benefit in taking GS11 instead of GS9 offer is that you will have less time in training, and less time to get to GS12, when you can telework.
But even if you pass the patent bar, trust me, without some experience in doing patent pros, you will need the training time to get used to the MPEP. The PTO has shortened training time for new examiners now. It used to be 8 months for all new examiners, but now new GS11 examiners get only 1 month of training, and new GS9 and below get 4 months of training. If you are new to patent law, you will need every minute of training you can get!
Besides that, the hiring SPE's always consider whether you might not want to stay, but I don't think they would hold your patent bar against you. In the last year,