Road to No Explicit Any Part 6: Composables and Extensions (#8083)

## Summary
- Type `onExecuted` callbacks with `NodeExecutionOutput` in saveMesh.ts
and uploadAudio.ts
- Type composable parameters and return values properly
(useLoad3dViewer, useImageMenuOptions, useJobMenu, useResultGallery,
useContextMenuTranslation)
- Type `taskRef` as `TaskItemImpl` with updated test mocks
- Fix error catch and index signature patterns without `any`
- Add `NodeOutputWith<T>` generic helper for typed access to passthrough
properties on `NodeExecutionOutput`

## Test plan
- [x] `pnpm typecheck` passes
- [x] `pnpm lint` passes
- [x] Unit tests pass for affected files
- [x] Sourcegraph checks confirm no external usage of modified types

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-8083-Road-to-No-Explicit-Any-Part-6-Composables-and-Extensions-2e96d73d3650810fb033d745bf88a22b)
by [Unito](https://www.unito.io)

src/extensions/core/imageCompare.ts

@@ -1,8 +1,13 @@
-import type { NodeExecutionOutput } from '@/schemas/apiSchema'
+import type { NodeOutputWith } from '@/schemas/apiSchema'
 import { api } from '@/scripts/api'
 import { app } from '@/scripts/app'
 import { useExtensionService } from '@/services/extensionService'
 
+type ImageCompareOutput = NodeOutputWith<{
+  a_images?: Record<string, string>[]
+  b_images?: Record<string, string>[]
+}>
+
 useExtensionService().registerExtension({
   name: 'Comfy.ImageCompare',
 
@@ -14,15 +19,10 @@ useExtensionService().registerExtension({
 
     const onExecuted = node.onExecuted
 
-    node.onExecuted = function (output: NodeExecutionOutput) {
+    node.onExecuted = function (output: ImageCompareOutput) {
       onExecuted?.call(this, output)
 
-      const aImages = (output as Record<string, unknown>).a_images as
-        | Record<string, string>[]
-        | undefined
-      const bImages = (output as Record<string, unknown>).b_images as
-        | Record<string, string>[]
-        | undefined
+      const { a_images: aImages, b_images: bImages } = output
       const rand = app.getRandParam()
 
       const beforeUrl =