Fix submounts of /dev being read-only with Docker 25+ (#4997)

As described in #4996, Docker 25+ changes made sub-mounts of the /dev
filesystem to be mounted read-only. Revert to the previous behavior by
adjusting the ReadOnlyNonRecursive option. Cleaner way would be to
upstream support for setting this option via Mount class arguments, so
this change is meant to be rather a hotfix for the issue. Even better
approach would be mounting /dev non-recursively, and taking care of
creating all necessary filesystems when creating containers in
Supervisor.

tests/docker/test_addon.py

@@ -19,6 +19,7 @@ from supervisor.resolution.const import ContextType, IssueType
 from supervisor.resolution.data import Issue
 
 from ..common import load_json_fixture
+from . import DEV_MOUNT
 
 
 @pytest.fixture(name="addonsdata_system")
@@ -66,11 +67,8 @@ def test_base_volumes_included(
         coresys, addonsdata_system, "basic-addon-config.json"
     )
 
-    # Dev added as ro
-    assert (
-        Mount(type="bind", source="/dev", target="/dev", read_only=True)
-        in docker_addon.mounts
-    )
+    # Dev added as ro with bind-recursive=writable option
+    assert DEV_MOUNT in docker_addon.mounts
 
     # Data added as rw
     assert (