Video: https://www.youtube.com/shorts/c_NHMkh

first I should note that my front disk is slightly bent and it touches the pads at some point during rotation.

so I have just been to the mechanic for "reconditioning" of the front fork, with oil replaced and new oil seal installed. I got it back yesterday and I noticed this loud clicking sound when I pull the bike backwards. It does the loud noise just once, when the disk touches the brake pads slightly and makes a bit of resistance, but the noise seems to come from the upper part of the fork under the plastics. In order to recreate the click i need to push it forwards for a bit and then move it backwards again.

Any ideas guys? Thank you