[vector_graphics] Respect BoxFit parameter with viewbox (closes #158496)#11012

Gustl22 wants to merge 2 commits intoflutter:mainflutter/packages:mainfrom

SWI-Swissinfo-ch:158496-vector-boxfitSWI-Swissinfo-ch/flutter-packages:158496-vector-boxfitCopy head branch name to clipboard