import { useRef } from 'react'
import TextField from '@mui/material/TextField'

  const refSubmitButtom = useRef<HTMLButtonElement>(null)
  const submitFormOnKeyDown = (e: any) => {
    if (!(e.key == 'Enter' && (e.metaKey == true || e.ctrlKey == true))) return

    refSubmitButtom.current?.click()
  }

<TextField
	onKeyDown={e => {
	  submitFormOnKeyDown(e)
	}}
/>

<LoadingButton type='submit' ref={refSubmitButtom}>送信ボタン</LoadingButton>