FIX: Maintain editing state after saving query changes (#223)

In the widget version of the data-explorer we would maintain the `editing` state after saving query changes. This was lost in upgrade to glimmer. 

# Current State
https://user-images.githubusercontent.com/50783505/217622464-79adaab6-84ed-4b64-93ae-c889aa8fb1bd.mp4

# Updated State
https://user-images.githubusercontent.com/50783505/217623475-1998fab6-0b70-42d2-923d-574efb9d5601.mov

# Other Changes
- `createProperties` was added back to the `query` model as it is being utilized in the creation of a new data explorer query. This was accidentally removed and was causing errors when trying to create a new query.
- Add new-query test

assets/javascripts/discourse/controllers/admin-plugins-explorer.js

@@ -110,7 +110,6 @@ export default class PluginsExplorerController extends Controller {
       .then(() => {
         this.dirty = false;
         this.editingName = false;
-        this.editingQuery = false;
       })
       .catch((x) => {
         popupAjaxError(x);
@@ -327,8 +326,6 @@ export default class PluginsExplorerController extends Controller {
           this.selectedItem.set("group_ids", []);
         }
         this.dirty = false;
-        this.editingName = false;
-        this.editingQuery = false;
       })
       .catch(popupAjaxError)
       .finally(() => (this.loading = false));
@@ -383,10 +380,6 @@ export default class PluginsExplorerController extends Controller {
 
   @action
   run() {
-    if (this.dirty || this.runDisabled) {
-      return;
-    }
-
     this.setProperties({
       loading: true,
       showResults: false,

assets/javascripts/discourse/models/query.js

@@ -56,4 +56,12 @@ export default class Query extends RestModel {
     }
     return props;
   }
+
+  createProperties() {
+    if (this.sql) {
+      // Importing
+      return this.updateProperties();
+    }
+    return this.getProperties("name");
+  }
 }