test: migrate as unknown as to @total-typescript/shoehorn (#10761)

*PR Created by the Glary-Bot Agent*

---

## Summary

- Replace all `as unknown as Type` assertions in 59 unit test files with
type-safe `@total-typescript/shoehorn` functions
- Use `fromPartial<Type>()` for partial mock objects where deep-partial
type-checks (21 files)
- Use `fromAny<Type>()` for fundamentally incompatible types: null,
undefined, primitives, variables, class expressions, and mocks with
test-specific extra properties that `PartialDeepObject` rejects
(remaining files)
- All explicit type parameters preserved so TypeScript return types are
correct
- Browser test `.spec.ts` files excluded (shoehorn unavailable in
`page.evaluate` browser context)

## Verification

- `pnpm typecheck` ✅
- `pnpm lint` ✅
- `pnpm format` ✅
- Pre-commit hooks passed (format + oxlint + eslint + typecheck)
- Migrated test files verified passing (ran representative subset)
- No test behavior changes — only type assertion syntax changed
- No UI changes — screenshots not applicable

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-10761-test-migrate-as-unknown-as-to-total-typescript-shoehorn-3336d73d365081f6b8adc44db5dcc380)
by [Unito](https://www.unito.io)

---------

Co-authored-by: Glary-Bot <glary-bot@users.noreply.github.com>
Co-authored-by: Amp <amp@ampcode.com>

src/composables/node/useNodePreviewAndDrag.test.ts

@@ -1,8 +1,8 @@
+import { fromAny, fromPartial } from '@total-typescript/shoehorn'
 import { ref } from 'vue'
 import { beforeEach, describe, expect, it, vi } from 'vitest'
 
 import type { ComfyNodeDefImpl } from '@/stores/nodeDefStore'
-
 import { useNodePreviewAndDrag } from './useNodePreviewAndDrag'
 
 const mockStartDrag = vi.fn()
@@ -72,9 +72,9 @@ describe('useNodePreviewAndDrag', () => {
         toJSON: () => ({})
       })
 
-      const mockEvent = {
+      const mockEvent = fromPartial<MouseEvent>({
         currentTarget: mockElement
-      } as Partial<MouseEvent> as MouseEvent
+      })
       result.handleMouseEnter(mockEvent)
 
       expect(result.isHovered.value).toBe(true)
@@ -85,9 +85,9 @@ describe('useNodePreviewAndDrag', () => {
       const result = useNodePreviewAndDrag(nodeDef)
 
       const mockElement = document.createElement('div')
-      const mockEvent = {
+      const mockEvent = fromPartial<MouseEvent>({
         currentTarget: mockElement
-      } as Partial<MouseEvent> as MouseEvent
+      })
       result.handleMouseEnter(mockEvent)
 
       expect(result.isHovered.value).toBe(false)
@@ -116,9 +116,9 @@ describe('useNodePreviewAndDrag', () => {
         setData: vi.fn(),
         setDragImage: vi.fn()
       }
-      const mockEvent = {
+      const mockEvent = fromAny<DragEvent, unknown>({
         dataTransfer: mockDataTransfer
-      } as unknown as DragEvent
+      })
 
       result.handleDragStart(mockEvent)
 
@@ -151,10 +151,10 @@ describe('useNodePreviewAndDrag', () => {
 
       result.isDragging.value = true
 
-      const mockEvent = {
+      const mockEvent = fromPartial<DragEvent>({
         clientX: 100,
         clientY: 200
-      } as Partial<DragEvent> as DragEvent
+      })
 
       result.handleDragEnd(mockEvent)
 
@@ -168,11 +168,11 @@ describe('useNodePreviewAndDrag', () => {
 
       result.isDragging.value = true
 
-      const mockEvent = {
+      const mockEvent = fromPartial<DragEvent>({
         dataTransfer: { dropEffect: 'none' },
         clientX: 300,
         clientY: 400
-      } as Partial<DragEvent> as DragEvent
+      })
 
       result.handleDragEnd(mockEvent)