[4.2.x] Fixed #34259 -- Passed called_from_command_line to command subparsers.

Backport of 017fa23d3b from main

tests/user_commands/management/commands/subparser_vanilla.py

@@ -0,0 +1,13 @@
+import argparse
+
+from django.core.management.base import BaseCommand
+
+
+class Command(BaseCommand):
+    def add_arguments(self, parser):
+        subparsers = parser.add_subparsers(parser_class=argparse.ArgumentParser)
+        parser_foo = subparsers.add_parser("foo")
+        parser_foo.add_argument("bar", type=int)
+
+    def handle(self, *args, **options):
+        pass