Phosh takes care of it in a smarter way[1]. The custom override also has the
consequence of never showing closing buttons in docked mode, which can be
an inconvenience.
[1] https://gitlab.gnome.org/World/Phosh/phosh/-/blob/main/src/docked-manager.c#L292-L295
Or in case the lines change with time:
```C
phosh_docked_manager_set_enabled (PhoshDockedManager *self, gboolean enable)
if (enable)
g_settings_reset (self->wm_settings, WM_KEY_LAYOUT);
else
g_settings_set_string (self->wm_settings, WM_KEY_LAYOUT, "appmenu:");
```
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