fix(intent-editor): save on Cmd+S instead of triggering browser save-page

The Intent Editor's $scope.save took no arguments and never called
preventDefault(), so the platform `shortcut` directive (which passes
`(keySet, event)` and deliberately leaves preventDefault to the action)
let the browser's native "Save page" dialog fire on Cmd+S/Ctrl+S. This
was most visible right after accepting an AI-assistant proposal, which
dirties the buffer without the user typing.

Adopt the repo-standard save signature already used by editor-csv,
editor-csvim and editor-integrations: accept `(keySet, event)` and
`event?.preventDefault()` first. The defaulted params keep the toolbar
Save button and the save-all/save-file hub handlers (which call save()
with no args) working unchanged.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: iliyan-velichkov

components/ui/editor-intent/src/main/resources/META-INF/dirigible/editor-intent/js/editor.js

@@ -99,7 +99,8 @@ editorView.controller('IntentEditorController', ($scope, $http, ViewParameters,
         });
     };
 
-    $scope.save = () => {
+    $scope.save = (keySet = 'ctrl+s', event) => {
+        event?.preventDefault();
         if (!$scope.changed || $scope.state.error) return;
         $scope.state.isBusy = true;
         WorkspaceService.saveContent($scope.dataParameters.filePath, $scope.text).then(() => {