[lint] Fix floating promises in browser_tests

- Fix floating promises in browser_tests/tests/remoteWidgets.spec.ts
- Fix floating promises in browser_tests/fixtures/ComfyPage.ts (4 methods)
- Fix floating promises in browser_tests/fixtures/components/SidebarTab.ts

All async functions now properly await their page.evaluate() calls to prevent floating promises.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

browser_tests/fixtures/ComfyPage.ts

@@ -1540,7 +1540,7 @@ export class ComfyPage {
   }
 
   async convertOffsetToCanvas(pos: [number, number]) {
-    return this.page.evaluate((pos) => {
+    return await this.page.evaluate((pos) => {
       return window['app'].canvas.ds.convertOffsetToCanvas(pos)
     }, pos)
   }
@@ -1592,21 +1592,21 @@ export class ComfyPage {
     await this.page.mouse.move(10, 10)
   }
   async getUndoQueueSize() {
-    return this.page.evaluate(() => {
+    return await this.page.evaluate(() => {
       const workflow = (window['app'].extensionManager as WorkspaceStore)
         .workflow.activeWorkflow
       return workflow?.changeTracker.undoQueue.length
     })
   }
   async getRedoQueueSize() {
-    return this.page.evaluate(() => {
+    return await this.page.evaluate(() => {
       const workflow = (window['app'].extensionManager as WorkspaceStore)
         .workflow.activeWorkflow
       return workflow?.changeTracker.redoQueue.length
     })
   }
   async isCurrentWorkflowModified() {
-    return this.page.evaluate(() => {
+    return await this.page.evaluate(() => {
       return (window['app'].extensionManager as WorkspaceStore).workflow
         .activeWorkflow?.isModified
     })

browser_tests/fixtures/components/SidebarTab.ts

@@ -237,7 +237,7 @@ export class QueueSidebarTab extends SidebarTab {
     if (width < 0 || width > 100) {
       throw new Error('Width must be between 0 and 100')
     }
-    return this.page.evaluate((width) => {
+    return await this.page.evaluate((width) => {
       localStorage.setItem('queue', JSON.stringify([width, 100 - width]))
     }, width)
   }

browser_tests/tests/remoteWidgets.spec.ts

@@ -37,8 +37,8 @@ test.describe('Remote COMBO Widget', () => {
     }, nodeName)
   }
 
-  const clickRefreshButton = (comfyPage: ComfyPage, nodeName: string) => {
-    return comfyPage.page.evaluate((name) => {
+  const clickRefreshButton = async (comfyPage: ComfyPage, nodeName: string) => {
+    return await comfyPage.page.evaluate((name) => {
       const node = window['app'].graph.nodes.find((node) => node.title === name)
       const buttonWidget = node.widgets.find((w) => w.name === 'refresh')
       return buttonWidget?.callback()