fix(widgets): add typed refetchInterval presets to WidgetDefinition

The v1.69.0 caching refactor replaced Redis pub/sub with a global 30s
client polling interval. Live monitoring widgets (health-monitoring,
Dashdot, dns-hole) that previously refreshed every 5s were stuck at 30s.

Adds a typed WidgetRefetchInterval preset (fiveSeconds | never) to
WidgetDefinition. Widgets that need faster polling set fiveSeconds;
widgets that don't need polling set never (fetch on mount only, manual
refresh via context menu). Absence = global 30s default.

 nine widgets get fiveSeconds (live monitoring)
 sixteen widgets get never (slow data, mount-only)
 remaining widgets use the 30s default

Also removes inline refetchInterval from docker widget component.

Fixes #6268

packages/widgets/src/network-controller/network-status/index.ts

@@ -1,3 +1,4 @@
+import { widgetRefetchInterval } from "../../definition";
 import { IconServerOff, IconTopologyFull } from "@tabler/icons-react";
 
 import { getIntegrationKindsByCategory } from "@homarr/definitions";
@@ -7,6 +8,8 @@ import { optionsBuilder } from "../../options";
 
 export const { definition, componentLoader } = createWidgetDefinition("networkControllerStatus", {
   icon: IconTopologyFull,
+  queryKey: [["widget", "networkController"]],
+  refetchInterval: widgetRefetchInterval.never,
   createOptions() {
     return optionsBuilder.from((factory) => ({
       content: factory.select({