[FEATURE REQ]Immediately trigger cross-regional fail-over on 410/LeaseLost

[FabianMeiswinkel]

Is your feature request related to a problem? Please describe.
Today when a read region loses the read lease it returns 410/LeaseLost - the client will then retry locally for up-to 30 seconds (catch-all 410 retry like for 410/0 or connectivity related 410) .

Describe the solution you'd like
Instead the 4120/LeaseLost should be mapped immediately to a 503 to allow the cross-regional retry to happen as quickly as possible (it should also result in per partition mark-down when available) - retrying in the next preferred region like usual for reads is acceptable.
Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
n/a

Information Checklist
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[github-actions]

Thanks for the feedback! We are routing this to the appropriate team for follow-up. cc @kushagraThapar @pjohari-ms @TheovanKraay.