[RateLimiter] RateLimiterFactory should implement a generic interface for mocks or be made non-final #58920
Description
Description
As of 6.4.* the glorious rate-limiter component cannot be easily mocked in unit tests, as the RateLimiterFactory class is final. While this makes sense for the general usability it could also implement a RateLimiterFactoryInterface with a create method, which would behave the same as the current component.
Optionally it could be made non-final, which would allow for the same behavior in tests (which looking at what the configuration does seem like the better idea for now?)
Example
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