reduce the number of queries for restoring alerts state on start-up.
The change should speed up the restore process and reduce pressure on `remoteRead.url`.
(cherry picked from commit 90d45574bf)
fix possible missing firing states for alerting rules in replay mode
Before if one firing stage is bigger than single query request range, like rule with a big `for`, alerting rule won't able to be detected as firing.
Co-authored-by: hagen1778 <roman@victoriametrics.com>
(cherry picked from commit abcb21aa5e)
