[3.12] gh-121913: Use str(exc) instead of exc.strerror in asyncio.base_events (GH-122269) (#122279)

gh-121913: Use str(exc) instead of exc.strerror in `asyncio.base_events` (GH-122269)
(cherry picked from commit 070f1e2)

Co-authored-by: AN Long <aisk@users.noreply.github.com>

Author: miss-islington

Lib/asyncio/base_events.py

@@ -994,8 +994,7 @@ async def _connect_sock(self, exceptions, addr_info, local_addr_infos=None):
                     except OSError as exc:
                         msg = (
                             f'error while attempting to bind on '
-                            f'address {laddr!r}: '
-                            f'{exc.strerror.lower()}'
+                            f'address {laddr!r}: {str(exc).lower()}'
                         )
                         exc = OSError(exc.errno, msg)
                         my_exceptions.append(exc)
@@ -1561,7 +1560,7 @@ async def create_server(
                     except OSError as err:
                         msg = ('error while attempting '
                                'to bind on address %r: %s'
-                               % (sa, err.strerror.lower()))
+                               % (sa, str(err).lower()))
                         if err.errno == errno.EADDRNOTAVAIL:
                             # Assume the family is not enabled (bpo-30945)
                             sockets.pop()