refactor: remove redundant animated filtering from TaskItemImpl

animated is already excluded by METADATA_KEYS in parseNodeOutput, so the
_.omit call in the constructor was redundant. Also removes unused
es-toolkit/compat import.

Addresses review feedback:
https://github.com/Comfy-Org/ComfyUI_frontend/pull/9622#discussion_r2925170222

src/stores/queueStore.test.ts

@@ -66,7 +66,7 @@ vi.mock('@/scripts/api', () => ({
 }))
 
 describe('TaskItemImpl', () => {
-  it('should remove animated property from outputs during construction', () => {
+  it('should exclude animated from flatOutputs', () => {
     const job = createHistoryJob(0, 'job-id')
     const taskItem = new TaskItemImpl(job, {
       'node-1': {
@@ -75,11 +75,9 @@ describe('TaskItemImpl', () => {
       }
     })
 
-    // Check that animated property was removed
-    expect('animated' in taskItem.outputs['node-1']).toBe(false)
-
-    expect(taskItem.outputs['node-1'].images).toBeDefined()
-    expect(taskItem.outputs['node-1'].images?.[0]?.filename).toBe('test.png')
+    expect(taskItem.flatOutputs).toHaveLength(1)
+    expect(taskItem.flatOutputs[0].filename).toBe('test.png')
+    expect(taskItem.flatOutputs[0].mediaType).toBe('images')
   })
 
   it('should handle outputs without animated property', () => {

src/stores/queueStore.ts

@@ -1,4 +1,3 @@
-import _ from 'es-toolkit/compat'
 import { defineStore } from 'pinia'
 import { computed, ref, shallowRef, toRaw, toValue } from 'vue'
 
@@ -257,10 +256,7 @@ export class TaskItemImpl {
             }
           }
         : {})
-    // Remove animated outputs from the outputs object
-    this.outputs = _.mapValues(effectiveOutputs, (nodeOutputs) =>
-      _.omit(nodeOutputs, 'animated')
-    )
+    this.outputs = effectiveOutputs
     this.flatOutputs = flatOutputs ?? this.calculateFlatOutputs()
   }