[MM-41671] Support Email Position+Validation (#19590)

model/config.go

@@ -1739,7 +1739,7 @@ type SupportSettings struct {
 	AboutLink                              *string `access:"site_customization,write_restrictable,cloud_restrictable"`
 	HelpLink                               *string `access:"site_customization,write_restrictable,cloud_restrictable"`
 	ReportAProblemLink                     *string `access:"site_customization,write_restrictable,cloud_restrictable"`
-	SupportEmail                           *string `access:"site_customization"`
+	SupportEmail                           *string `access:"site_notifications"`
 	CustomTermsOfServiceEnabled            *bool   `access:"compliance_custom_terms_of_service"`
 	CustomTermsOfServiceReAcceptancePeriod *int    `access:"compliance_custom_terms_of_service"`
 	EnableAskCommunityLink                 *bool   `access:"site_customization"`