[3.13] gh-140648: Make asyncio REPL respect the `-I` flag (isolated mode) (GH-143045) (#143384)

gh-140648: Make asyncio REPL respect the `-I` flag (isolated mode) (GH-143045)
(cherry picked from commit e7c542de5f069a4b83e8eded3067613e4d59a529)

Co-authored-by: Bartosz Sławecki <bartosz@ilikepython.com>