9727f2427f
Fixes #17433. Currently, if any of the validations we do before we check start rate limiting fail, we can still enter a busy loop as no rate limiting gets applied. A common occurence of this scenario is path units triggering a service that fails a condition check. To fix the issue, we simply move up start rate limiting checks to be the first thing we do when starting a unit. To achieve this, we add a new method to the unit vtable and implement it for the relevant unit types so that we can do the start rate limit checks earlier on.
System and Service Manager
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