Suppress ClientConnectionResetError when returning logs

When client requests (or more often follows) some busy logs and closes
the connection while the StreamWriter tries to write into it, an
exception is raised. This should be harmless, and unless there's another
way to handle this gracefully (I'm not aware of), then it should be safe
to ignore the exception in this context.

supervisor/api/host.py

@@ -4,7 +4,7 @@
 from contextlib import suppress
 import logging
 
-from aiohttp import web
+from aiohttp import ClientConnectionResetError, web
 from aiohttp.hdrs import ACCEPT, RANGE
 import voluptuous as vol
 from voluptuous.error import CoerceInvalid
@@ -260,7 +260,10 @@ async def advanced_logs_handler(
                             response.headers["X-First-Cursor"] = cursor
                         await response.prepare(request)
                         headers_returned = True
-                    await response.write(line.encode("utf-8") + b"\n")
+                    # When client closes the connection while reading busy logs, we
+                    # sometimes get this exception. It should be safe to ignore it.
+                    with suppress(ClientConnectionResetError):
+                        await response.write(line.encode("utf-8") + b"\n")
             except ConnectionResetError as ex:
                 raise APIError(
                     "Connection reset when trying to fetch data from systemd-journald."