Use shared button components in queue overlay (#6793)

## Summary
- replace raw button elements in queue progress overlay UI with shared
IconButton/TextButton/IconTextButton components
- remove forced justify-start from IconTextButton base and add explicit
alignment where needed
- keep queue overlay actions consistent with button styling patterns

## Testing
- pnpm typecheck
- pnpm lint:fix

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6793-Use-shared-button-components-in-queue-overlay-2b26d73d3650814d9ebfebba74226036)
by [Unito](https://www.unito.io)

src/components/queue/QueueOverlayExpanded.vue

@@ -8,17 +8,20 @@
     />
 
     <div class="flex items-center justify-between px-3">
-      <button
-        class="inline-flex grow cursor-pointer items-center justify-center gap-1 rounded border-0 bg-secondary-background p-2 text-center font-inter text-[12px] leading-none text-text-primary hover:bg-secondary-background-hover hover:opacity-90"
+      <IconTextButton
+        class="grow gap-1 p-2 text-center font-inter text-[12px] leading-none hover:opacity-90 justify-center"
+        type="secondary"
+        :label="t('sideToolbar.queueProgressOverlay.showAssets')"
         :aria-label="t('sideToolbar.queueProgressOverlay.showAssets')"
         @click="$emit('showAssets')"
       >
-        <div
-          class="pointer-events-none block size-4 shrink-0 leading-none icon-[comfy--image-ai-edit]"
-          aria-hidden="true"
-        />
-        <span>{{ t('sideToolbar.queueProgressOverlay.showAssets') }}</span>
-      </button>
+        <template #icon>
+          <div
+            class="pointer-events-none block size-4 shrink-0 leading-none icon-[comfy--image-ai-edit]"
+            aria-hidden="true"
+          />
+        </template>
+      </IconTextButton>
       <div class="ml-4 inline-flex items-center">
         <div
           class="inline-flex h-6 items-center text-[12px] leading-none text-text-primary opacity-90"
@@ -28,16 +31,18 @@
             t('sideToolbar.queueProgressOverlay.queuedSuffix')
           }}</span>
         </div>
-        <button
+        <IconButton
           v-if="queuedCount > 0"
-          class="group ml-2 inline-flex size-6 cursor-pointer items-center justify-center rounded border-0 bg-secondary-background p-0 transition-colors hover:bg-destructive-background"
+          class="group ml-2 size-6 bg-secondary-background hover:bg-destructive-background"
+          type="secondary"
+          size="sm"
           :aria-label="t('sideToolbar.queueProgressOverlay.clearQueued')"
           @click="$emit('clearQueued')"
         >
           <i
             class="pointer-events-none icon-[lucide--list-x] block size-4 leading-none text-text-primary transition-colors group-hover:text-base-background"
           />
-        </button>
+        </IconButton>
       </div>
     </div>
 
@@ -75,6 +80,8 @@
 import { ref } from 'vue'
 import { useI18n } from 'vue-i18n'
 
+import IconButton from '@/components/button/IconButton.vue'
+import IconTextButton from '@/components/button/IconTextButton.vue'
 import type {
   JobGroup,
   JobListItem,