fix(provide): do not output keystore error on shutdown (#11130)

* Do not output keystore error on shutdown.

Closes #11127

* fix: add debug log for keystore sync interrupted by shutdown

log at DEBUG level when keystore sync is interrupted during shutdown,
preserving error details for debugging while keeping normal output clean

---------

Co-authored-by: Marcin Rataj <[email protected]>

Author: gammazero

core/node/provider.go

@@ -489,10 +489,14 @@ func SweepingProviderOpt(cfg *config.Config) fx.Option {
 					strategy := cfg.Provide.Strategy.WithDefault(config.DefaultProvideStrategy)
 					logger.Infow("provider keystore sync started", "strategy", strategy)
 					if err := syncKeystore(ctx); err != nil {
-						logger.Errorw("provider keystore sync failed", "err", err, "strategy", strategy)
-					} else {
-						logger.Infow("provider keystore sync completed", "strategy", strategy)
+						if ctx.Err() == nil {
+							logger.Errorw("provider keystore sync failed", "err", err, "strategy", strategy)
+						} else {
+							logger.Debugw("provider keystore sync interrupted by shutdown", "err", err, "strategy", strategy)
+						}
+						return
 					}
+					logger.Infow("provider keystore sync completed", "strategy", strategy)
 				}()
 
 				gcCtx, c := context.WithCancel(context.Background())