public dashboards: check to see if dashboard state is different from persisted on save (#52008)

* public dashboards: check to see if dashboard state is different from persisted on save

Co-authored-by: Ezequiel Victorero <ezequiel.victorero@grafana.com>

public/app/features/dashboard/components/ShareModal/SharePublicDashboard.tsx

@@ -221,7 +221,14 @@ export const SharePublicDashboard = (props: Props) => {
                 </Field>
               )}
             </FieldSet>
-            <Button disabled={!acknowledged()} onClick={onSavePublicConfig}>
+
+            {props.dashboard.hasUnsavedChanges() && (
+              <Alert
+                title="Please save your dashboard changes before updating the public configuration"
+                severity="warning"
+              />
+            )}
+            <Button disabled={!acknowledged() || props.dashboard.hasUnsavedChanges()} onClick={onSavePublicConfig}>
               Save Sharing Configuration
             </Button>
           </div>