geosolutions-it / MapStore2 / 29757054496

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Fix #12688 - Cap auto-refresh on recurring WMS tile load errors

The loadingError-triggered wmsSource.refresh() had no limit: if the
underlying tile failure is intermittent rather than a one-off config
mistake, each refresh's own burst of concurrent tile requests can
reproduce the same failure, re-triggering another refresh forever.

Adds a per-layer attempt counter within a 30s cooldown window, capped
at 3 consecutive auto-refreshes. The window resets only after a real
quiet period, not on every transient recovery, since the loop itself
involves the error state oscillating rapidly.

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