Add PromptDialog to replace window.prompt (#1104)

* Save file prompt dialog

* Don't download if dialog dismissed

* refactor

* style dialog

* nit

* Autofocus

tests-ui/globalSetup.ts

@@ -16,7 +16,15 @@ module.exports = async function () {
   jest.mock('@/services/dialogService', () => {
     return {
       showLoadWorkflowWarning: jest.fn(),
-      showMissingModelsWarning: jest.fn()
+      showMissingModelsWarning: jest.fn(),
+      showSettingsDialog: jest.fn(),
+      showExecutionErrorDialog: jest.fn(),
+      showTemplateWorkflowsDialog: jest.fn(),
+      showPromptDialog: jest
+        .fn()
+        .mockImplementation((message, defaultValue) => {
+          return Promise.resolve(defaultValue)
+        })
     }
   })
 }