…) (#151227)

[3.15] gh-143008: Fix race re-initializing TextIOWrapper (#151203)

__init__() changes multiple variables and may be called more than once
from multiple threads.

(cherry picked from commit 0318867)

Co-authored-by: Cody Maloney <cmaloney@users.noreply.github.com>

…151226)

[3.15] gh-143008: Fix race re-initializing TextIOWrapper (GH-151203)

__init__() changes multiple variables and may be called more than once
from multiple threads.
(cherry picked from commit 0318867)

Co-authored-by: Cody Maloney <cmaloney@users.noreply.github.com>