fix: Regression of discover plugin not displaying on default

* Since slicing the discover plugin in two, hawtio opens with no plugin
  selected. This is due to discover-core being chosen as the default
  plugin rather than discover (UI)

* Change the presentation order of the plugins to ensure that discover is
  first in the order and so selected by default

packages/online-shell/src/discover-core/index.ts

@@ -19,6 +19,11 @@ export const discoverCore: HawtioPlugin = () => {
     id: pluginId,
     title: pluginTitle,
     headerItems: [{ component: HeaderMenuDropDown, universal: true }],
+    /*
+     * order must be bigger (low priority) than discover-core
+     * to ensure it is not the default
+     */
+    order: 200,
     isActive: async () => true,
   })
 

packages/online-shell/src/discover/index.ts

@@ -11,6 +11,11 @@ export const discover: HawtioPlugin = () => {
     title: pluginTitle,
     path: pluginPath,
     component: Discover,
+    /*
+     * order must be smaller (higher priority) than discover-core
+     * to ensure it is the default
+     */
+    order: 31,
     isActive: async () => {
       // Only active is there is NO current connection
       const connection = await connectService.getCurrentConnection()