[3.12] gh-106669: Revert "gh-102988: Detect email address parsing errors ... (GH-105127)" (GH-106733) (#106941)

This reverts commit 18dfbd035775c15533d13a98e56b1d2bf5c65f00.
Adds a regression test from the issue.

See https://github.com/python/cpython/issues/106669..
(cherry picked from commit a31dea1feb61793e48fa9aa5014f358352205c1d)