refactor: remove any types from batch 16 test files (6 instances)

Fixed 6 'as any' instances across 2 files:
- subgraphStore.test.ts: Used ReturnType for getUserData mock and ExportedSubgraph for subgraph serialization
- modelToNodeStore.test.ts: Used proper type casts for invalid input test cases

src/stores/modelToNodeStore.test.ts

@@ -189,7 +189,7 @@ describe('useModelToNodeStore', () => {
     it('should not register provider when nodeDef is undefined', () => {
       const modelToNodeStore = useModelToNodeStore()
       const providerWithoutNodeDef = new ModelNodeProvider(
-        undefined as any,
+        undefined as unknown as ComfyNodeDefImpl,
         'custom_key'
       )
 
@@ -458,13 +458,13 @@ describe('useModelToNodeStore', () => {
 
       // These should not throw but return undefined
       expect(
-        modelToNodeStore.getCategoryForNodeType(null as any)
+        modelToNodeStore.getCategoryForNodeType(null as unknown as string)
       ).toBeUndefined()
       expect(
-        modelToNodeStore.getCategoryForNodeType(undefined as any)
+        modelToNodeStore.getCategoryForNodeType(undefined as unknown as string)
       ).toBeUndefined()
       expect(
-        modelToNodeStore.getCategoryForNodeType(123 as any)
+        modelToNodeStore.getCategoryForNodeType(123 as unknown as string)
       ).toBeUndefined()
     })
 

src/stores/subgraphStore.test.ts

@@ -1,6 +1,7 @@
 import { createPinia, setActivePinia } from 'pinia'
 import { beforeEach, describe, expect, it, vi } from 'vitest'
 
+import type { ExportedSubgraph } from '@/lib/litegraph/src/litegraph'
 import type { ComfyNodeDef as ComfyNodeDefV1 } from '@/schemas/nodeDefSchema'
 import { api } from '@/scripts/api'
 import { app as comfyApp } from '@/scripts/app'
@@ -72,7 +73,7 @@ describe('useSubgraphStore', () => {
         ({
           status: 200,
           text: () => JSON.stringify(filenames[f.slice(10)])
-        }) as any
+        }) as unknown as ReturnType<typeof api.getUserData>
     )
     return await store.fetchSubgraphs()
   }
@@ -92,7 +93,7 @@ describe('useSubgraphStore', () => {
     vi.mocked(comfyApp.canvas).selectedItems = new Set([subgraphNode])
     vi.mocked(comfyApp.canvas)._serializeItems = vi.fn(() => ({
       nodes: [subgraphNode.serialize()],
-      subgraphs: [subgraph.serialize() as any]
+      subgraphs: [subgraph.serialize() as unknown as ExportedSubgraph]
     }))
     //mock saving of file
     vi.mocked(api.storeUserData).mockResolvedValue({