[3.11] gh-100061: Proper fix of the bug in the matching of possessive quantifiers (GH-102612) (GH-108004)

Restore the global Input Stream pointer after trying to match a sub-pattern.

Co-authored-by: Ma Lin <animalize@users.noreply.github.com>

(cherry picked from commit abd9cc52d94b8e2835322b62c29f09bb0e6fcfe9)
    
Co-authored-by: SKO <41810398+uyw4687@users.noreply.github.com>