When runtime is true @nuxtjs/markdownit-loader option is broken

[odanado]

Here is delete options.use.

markdownit-module/src/runtime/plugin.js

Line 10 in d615e56

delete options.use

This code unintentionally changes the moduleLoader option.
https://github.com/nuxt-community/markdownit-module/blob/d615e56dcc/src/module.ts#L22

Specifying runtime: false solves this problem, but $md.render will not be available

minimal reproduction repository: https://github.com/odan-sandbox/nuxt-markdown-it-plugin-sandbox
Related: #29