[3.13] gh-125942: Android: set stdout to `errors="backslashreplace"` (GH-125943) (#125950)

gh-125942: Android: set stdout to `errors="backslashreplace"` (GH-125943)

Android stdout/err streams now use `backslashreplace` encoding to ensure readability of the Android log.
(cherry picked from commit b08570c90eb9fa2e2ee4429909b14240b7a427d4)

Co-authored-by: Malcolm Smith <smith@chaquo.com>