fix: isHotkey webpack error (#6466)

Fixes webpack issue with isHotkey: `TypeError:
is_hotkey__WEBPACK_IMPORTED_MODULE_9__ is not a function`

Changing this from a default import to a named export, and it appears to
resolve the issue.

Fixes #6421

packages/richtext-slate/package.json

@@ -42,6 +42,7 @@
   "devDependencies": {
     "@payloadcms/eslint-config": "workspace:*",
     "@payloadcms/ui": "workspace:*",
+    "@types/is-hotkey": "^0.1.10",
     "@types/node": "20.12.5",
     "@types/react": "18.3.2",
     "payload": "workspace:*"

packages/richtext-slate/src/field/RichText.tsx

@@ -15,7 +15,7 @@ import { useField } from '@payloadcms/ui/forms/useField'
 import { withCondition } from '@payloadcms/ui/forms/withCondition'
 import { useEditDepth } from '@payloadcms/ui/providers/EditDepth'
 import { useTranslation } from '@payloadcms/ui/providers/Translation'
-import isHotkey from 'is-hotkey'
+import { isHotkey } from 'is-hotkey'
 import React, { useCallback, useEffect, useMemo, useRef } from 'react'
 import { Node, Element as SlateElement, Text, Transforms, createEditor } from 'slate'
 import { withHistory } from 'slate-history'