[bug#54022] [PATCH] python: fix exit status handling with uninstall

* lib/am/python.am: Fix final subshell exit status passing. Looks good to me, FWIW. -k

[bug#54022] [PATCH] python: fix exit status handling with uninstall

The st variable is set at the top of this shell script, and then here is a pipeline where it tries to update it in the subshell. But since setting variables in a subshell doesn't propagate back up, it doesn't actually work. Have the final subshell in the pipeline manage its own exit status and ex