Removing a vignette created by the iPhone 15 main camera by using Lighroom IOS

Greetings,

I would like to process a raw astrophotography shot I took of the Milky Way with my iPhone 15 pro using the main camera. As you can see in the attached photo, the phone created a vignette on the image. I would like to use Lightroom IOS version to remove that vignette. Please direct me to a tutorial that show me how to remove that vignette created by the phone.

All help will be appreciated.

Truly,

Emad