[3.12] gh-103194: Fix Tkinter’s Tcl value type handling for Tcl 8.7/9.0 (GH-103846) (GH-119831)

Some of standard Tcl types were renamed, removed, or no longer
registered in Tcl 8.7/9.0. This change fixes automatic conversion of Tcl
values to Python values to avoid returning a Tcl_Obj where the primary
Python types (int, bool, str, bytes) were returned in older Tcl.
(cherry picked from commit 94e9585e99abc2d060cedc77b3c03e06b4a0a9c4)

Co-authored-by: Christopher Chavez <chrischavez@gmx.us>