feat(ui): rework queue controls

- Remove queue front button. Hold shift while clicking `Invoke` button to queue front.
- Restore queue menu actions w/ the reclaimed space.
- Simplify queue interaction hooks.

invokeai/frontend/web/src/features/queue/components/QueueControls.tsx

@@ -1,26 +1,24 @@
 import { Flex, Spacer } from '@invoke-ai/ui-library';
 import { useAppSelector } from 'app/store/storeHooks';
 import { ClearQueueIconButton } from 'features/queue/components/ClearQueueIconButton';
-import QueueFrontButton from 'features/queue/components/QueueFrontButton';
+import { QueueActionsMenuButton } from 'features/queue/components/QueueActionsMenuButton';
 import { SendToToggle } from 'features/queue/components/SendToToggle';
 import ProgressBar from 'features/system/components/ProgressBar';
-import { useFeatureStatus } from 'features/system/hooks/useFeatureStatus';
 import { selectActiveTab } from 'features/ui/store/uiSelectors';
 import { memo } from 'react';
 
-import { InvokeQueueBackButton } from './InvokeQueueBackButton';
+import { InvokeButton } from './InvokeQueueBackButton';
 
 const QueueControls = () => {
-  const isPrependEnabled = useFeatureStatus('prependQueue');
   const tab = useAppSelector(selectActiveTab);
 
   return (
     <Flex w="full" position="relative" borderRadius="base" gap={2} flexDir="column">
       <Flex gap={2}>
-        {isPrependEnabled && <QueueFrontButton />}
-        <InvokeQueueBackButton />
+        <InvokeButton />
         <Spacer />
         {tab === 'canvas' && <SendToToggle />}
+        <QueueActionsMenuButton />
         <ClearQueueIconButton />
       </Flex>
       <ProgressBar />