Switch out assertions to `g_critical()` or `g_return_val()`
CI already run with env["G_DEBUG"] = "fatal-criticals" and these
errors would cause the daemon to abort. In the event something
escapes don't show a crash on a regular user's system.
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CI already run with env["G_DEBUG"] = "fatal-criticals" and these
errors would cause the daemon to abort. In the event something
escapes don't show a crash on a regular user's system.