Reflect 'context' arg in 'AbstractEventLoop.call_*()' methods (GH-30427) (GH-30428)

(cherry picked from commit 3e43fac250)

Co-authored-by: Andrew Svetlov <andrew.svetlov@gmail.com>

Co-authored-by: Andrew Svetlov <andrew.svetlov@gmail.com>

Lib/asyncio/events.py

@@ -258,13 +258,13 @@ class AbstractEventLoop:
         """Notification that a TimerHandle has been cancelled."""
         raise NotImplementedError
 
-    def call_soon(self, callback, *args):
+    def call_soon(self, callback, *args, context=None):
         return self.call_later(0, callback, *args)
 
-    def call_later(self, delay, callback, *args):
+    def call_later(self, delay, callback, *args, context=None):
         raise NotImplementedError
 
-    def call_at(self, when, callback, *args):
+    def call_at(self, when, callback, *args, cotext=None):
         raise NotImplementedError
 
     def time(self):
@@ -280,7 +280,7 @@ class AbstractEventLoop:
 
     # Methods for interacting with threads.
 
-    def call_soon_threadsafe(self, callback, *args):
+    def call_soon_threadsafe(self, callback, *args, context=None):
         raise NotImplementedError
 
     def run_in_executor(self, executor, func, *args):

Misc/NEWS.d/next/Library/2022-01-06-13-38-00.bpo-46278.wILA80.rst

@@ -0,0 +1,2 @@
+Reflect ``context`` argument in ``AbstractEventLoop.call_*()`` methods. Loop
+implementations already support it.