Split selection into an inputs and outputs step (#9362)

When building an app, selecting inputs and selecting outputs are now 2
separate steps. This prevents confusion where clicking on the widget of
an output node will select that widget instead of the entire output.

<img width="1673" height="773" alt="image"
src="https://github.com/user-attachments/assets/e5994479-6fcf-4572-b58b-bf8cecfb7d55"
/>

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-9362-Split-selection-into-an-inputs-and-outputs-step-3196d73d36508187b4a1e51c73f1c54c)
by [Unito](https://www.unito.io)

---------

Co-authored-by: GitHub Action <action@github.com>

src/platform/workflow/core/services/workflowService.test.ts

@@ -365,14 +365,14 @@ describe('useWorkflowService', () => {
         })
         const workflow2 = createModeTestWorkflow({
           path: 'workflows/two.json',
-          activeMode: 'builder:select'
+          activeMode: 'builder:inputs'
         })
 
         workflowStore.activeWorkflow = workflow1
         expect(appMode.mode.value).toBe('app')
 
         workflowStore.activeWorkflow = workflow2
-        expect(appMode.mode.value).toBe('builder:select')
+        expect(appMode.mode.value).toBe('builder:inputs')
       })
     })
 
@@ -507,7 +507,7 @@ describe('useWorkflowService', () => {
       it('each workflow retains its own mode across tab switches', () => {
         const workflow1 = createModeTestWorkflow({
           path: 'workflows/one.json',
-          activeMode: 'builder:select'
+          activeMode: 'builder:inputs'
         })
         const workflow2 = createModeTestWorkflow({
           path: 'workflows/two.json',
@@ -515,13 +515,13 @@ describe('useWorkflowService', () => {
         })
 
         workflowStore.activeWorkflow = workflow1
-        expect(appMode.mode.value).toBe('builder:select')
+        expect(appMode.mode.value).toBe('builder:inputs')
 
         workflowStore.activeWorkflow = workflow2
         expect(appMode.mode.value).toBe('app')
 
         workflowStore.activeWorkflow = workflow1
-        expect(appMode.mode.value).toBe('builder:select')
+        expect(appMode.mode.value).toBe('builder:inputs')
       })
     })
   })