Breaks not working with template string

[alisonmoura]

Describe the bug
Passing a template string with line breaks isn't work

To Reproduce

1. In a Vue component, create a template string variable, like:

data() {
   return {
      content: `
# Title

Some text
`
   }
}

2. On the component's HTML, use

<vue3-markdown-it :source="post.content" :breaks="true"></vue3-markdown-it>

3. The result doesn't inset the br tag

Expected behavior
To inset the br tag