Fix all flake8 warnings from newer flake8-bugbear and flake8-comprehensions

Address warnings introduced by flake8-bugbear 24.12.12 and
flake8-comprehensions 3.16.0:

- C408: Replace dict()/list() calls with literal {} and []
- C413: Remove unnecessary list() around sorted()
- C414: Remove unnecessary list() inside sorted()
- C419: Suppress intentional list comprehension in all() (noqa)
- B001: Replace bare except with except Exception
- B006: Replace mutable default arguments with None
- B010: Replace setattr() with direct attribute assignment
- B017: Use RuntimeError instead of Exception in tests
- B019: Suppress lru_cache on methods for long-lived objects (noqa)
- B033: Remove duplicate item in set literal

Change-Id: If4693d3e946200bbc22f689f7b94da604addcb80
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/566321
Tested-by: Carlos Fernandez <carlosfsanz@meta.com>
Commit-Queue: Carlos Fernandez <carlosfsanz@meta.com>
Reviewed-by: Mike Frysinger <vapier@google.com>
Reviewed-by: Gavin Mak <gavinmak@google.com>

subcmds/help.py

@@ -59,7 +59,7 @@ Displays detailed usage information about a command.
 
     def PrintAllCommandsBody(self):
         print("The complete list of recognized repo commands is:")
-        commandNames = list(sorted(all_commands))
+        commandNames = sorted(all_commands)
         self._PrintCommands(commandNames)
         print(
             "See 'repo help <command>' for more information on a "
@@ -74,10 +74,8 @@ Displays detailed usage information about a command.
     def PrintCommonCommandsBody(self):
         print("The most commonly used repo commands are:")
 
-        commandNames = list(
-            sorted(
-                name for name, command in all_commands.items() if command.COMMON
-            )
+        commandNames = sorted(
+            name for name, command in all_commands.items() if command.COMMON
         )
         self._PrintCommands(commandNames)