[py] fix: drag and drop by offset broken (#6172)

closes #6171 

Cr-Mirrored-From: https://chromium.googlesource.com/external/github.com/SeleniumHQ/selenium
Cr-Mirrored-Commit: 24aed0d781cd34c93b1d8392c24bb7d9203cd07e
1 file changed