fix(mysql): pin dashboard polling to one client session

Closes #5969

apps/desktop/src/stores/queryStore.ts

@@ -1793,7 +1793,7 @@ export const useQueryStore = defineStore("query", () => {
       id,
       title: conn?.name ? `${conn.name} - ${t("serverDashboard.title")}` : t("serverDashboard.title"),
       connectionId,
-      database: conn?.database || "",
+      database: "",
       sql: "",
       isExecuting: false,
       isCancelling: false,