disable_photo is not respected if enable_qr is on

[Henriquelay]

https://github.com/charslab/TranscriberBot/blob/82d5e37ec7556923852718c58406812e34c407c2/src/transcriberbot/blueprints/photos.py#L25-L26

In a group, I want to have qr code setting on and the bot would reply to a photo only if a qr code is detected, staying silent otherwise. I believe this is an expected behavior.

Similarly, and based on these lines of code, there also seems to be a problem for image OCR on and QR code off: it would still send QR code parsing results in a chat where only OCR is desired.