Expose __path and __relativePath options on md instance for md plugins

Is your feature request related to a problem? Please describe.

I found that #1240 has removed these two parameters, which makes it impossible for me to customize the MD plugin on this basis

Describe the solution you’d like

Can you __ Path and __ Relativepath these two attributes are added to the MD instance to better customize the MD plugin

Describe alternatives you’ve considered

No response

Additional context

No response

Validations

• Follow our Code of Conduct
• Read the docs.
• Read the Contributing Guidelines.
• Check that there isn’t already an issue that asks for the same feature to avoid creating a duplicate.

[meteorlxy]

Uh yes, I forgot that.

[flingyp]

@meteorlxy

I finally used env.sfcblocks.scripts because vitepress does not seem to handle 'env.sfcblocks.scriptsetup` code logic. But thank you for guiding me to solve the problem.

const vueSrc = [
    ...injectPageDataCode(
      sfcBlocks?.scripts.map((item) => item.content) ?? [],
      pageData,
      replaceRegex
    ),
    `<template><div>${replaceConstants(
      html,
      replaceRegex,
      vueTemplateBreaker
    )}</div></template>`,
    ...(sfcBlocks?.styles.map((item) => item.content) ?? []),
    ...(sfcBlocks?.customBlocks.map((item) => item.content) ?? [])
  ].join('\n')