release-22.2: disable cross descriptor validation during lease renewal

Previously, we added support for disabling descriptor lease
validation during lease renewal to avoid regressions
due to the overhead on multi-region clusters, where in some
cases schema change transactions would hit retry errors.
This was inadequate because the default still exposed users
to a regression in behaviour. To address this, this patch will
disable cross-descriptor validation by default during lease renewal.

Informs: cockroachdb#95764

Release note: None

pkg/base/config.go

@@ -100,7 +100,7 @@ const (
 
 	// DefaultLeaseRenewalCrossValidate is the default setting for if
 	// we should validate descriptors on lease renewals.
-	DefaultLeaseRenewalCrossValidate = true
+	DefaultLeaseRenewalCrossValidate = false
 )
 
 // DefaultCertsDirectory is the default value for the cert directory flag.