Using tiptap with v-model and <script setup> in Vue 3

I'm trying to use tiptap with Vue.js with the <script setup> approach of creating a Single File Component (SFC).

TextEditor.vue

<template>
  <editor-content :editor="editor" class="editor" />
</template>

<script lang="ts" setup>
import { useEditor, EditorContent } from '@tiptap/vue-3'
import StarterKit from '@tiptap/starter-kit'

const props = defineProps({
  modelValue: {
    type: String,
    default: "",
  }
})

const emit = defineEmits(['update:modelValue'])

const editor = useEditor({
  content: props.modelValue,
  extensions: [StarterKit],
  onUpdate: ({editor}) => {
    let content = editor.getHTML()
    emit('update:modelValue', content)
  }
})
</script>

I then use this component like this:

<template>
  <text-editor v-model="myModel.content" />
</template>

This works when <text-editor> is loaded after myModel.content is defined.

However, if <text-editor> loads before myModel.content is set from my database API, then the text content remains blank. From what I understand from looking at the examples in the tiptap docs, I need to somehow use watch to update my editor when props.modelValue is changed using something like this:

watch(() => props.modelValue, (newValue, oldValue) => {
  const isSame = newValue === oldValue
  console.log(`Same: ${isSame}`)
  if (isSame) {
    return
  }
  editor.commands.setContent(newValue, false)
})

However, in the snippet above, editor is a ShallowRef type and doesn't have a reference to commands to call setContent.

What is the best way to get the above example to work when loading tiptap with the <script setup> approach?