Yet further app fixes (#9523)

- Prevent selection of note nodes
- Prevents selection  of nodes with errors
- A bit broader than the reported "can select missing nodes". A node
with an error is a node that can not execute and thus can not be used in
an app.
- Updates the typeform survey
- Add a collapsible list of all api nodes(/prices) contained in an app.
  - Needs to be prettied up for mobile still.
<img width="322" height="751" alt="image"
src="https://github.com/user-attachments/assets/ebfeeada-9b80-488e-88d6-feaa8bd53629"
/>

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-9523-Yet-further-app-fixes-31c6d73d365081de9150fbf2d3ec54dd)
by [Unito](https://www.unito.io)

src/components/builder/AppBuilder.vue

@@ -27,7 +27,7 @@ import { app } from '@/scripts/app'
 import { DOMWidgetImpl } from '@/scripts/domWidget'
 import { useDialogService } from '@/services/dialogService'
 import { useAppMode } from '@/composables/useAppMode'
-import { useAppModeStore } from '@/stores/appModeStore'
+import { nodeTypeValidForApp, useAppModeStore } from '@/stores/appModeStore'
 import { resolveNode } from '@/utils/litegraphUtil'
 import { cn } from '@/utils/tailwindUtil'
 import { HideLayoutFieldKey } from '@/types/widgetTypes'
@@ -162,7 +162,11 @@ function handleDown(e: MouseEvent) {
 }
 function handleClick(e: MouseEvent) {
   const [node, widget] = getHovered(e) ?? []
-  if (node?.mode !== LGraphEventMode.ALWAYS)
+  if (
+    node?.mode !== LGraphEventMode.ALWAYS ||
+    !nodeTypeValidForApp(node.type) ||
+    node.has_errors
+  )
     return canvasInteractions.forwardEventToCanvas(e)
 
   if (!widget) {
@@ -198,7 +202,9 @@ const renderedOutputs = computed(() => {
   return canvas
     .graph!.nodes.filter(
       (n) =>
-        n.constructor.nodeData?.output_node && n.mode === LGraphEventMode.ALWAYS
+        n.constructor.nodeData?.output_node &&
+        n.mode === LGraphEventMode.ALWAYS &&
+        !n.has_errors
     )
     .map(nodeToDisplayTuple)
 })