docs(python): Page.emulateMedia.media "null" value follow-up (#18555)
docs(python): Page.emulateMedia.media "null" value follow-up (#18555)

Follow-up of 91f7e3963dfd647ad23bdef2da7dc22279c79ca0.
microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright