I'm familiar with the various sounds made by the Bronco when you unlock, open the doors and press the brake pedal, this is not one I've ever heard. My '21 Badlands 2.7L never once made a chirp noise.
Reading through the descriptions in that Ranger forum from 2023, this is not the same sound...
I tried to pay better attention on my way to work today. It did go away after a while, but it's definitely triggered by the brake pedal for me. I thought there was something with the accelerator as well, but I realized it was just my foot moving from the brake to accelerator right at the time it...
It's an optional 33" tire for the non-Sasquatch (at least it was for the '25).
EDIT: Looking at the B&P... '25 has the Goodyear 33" as optional and '26 only has the BFG (for non-Sasquatch).
Your dealer can track it on the map in their software, orr... They can give you the railcar number and you can call a million times for automated trace information like I did. 😂