fix: Monaco editor context menu in build mode

[KermanX]

fix #1876

Not sure if this fix works. Waiting for the preview.... This works: https://deploy-preview-1905--slidev.netlify.app/demo/starter/15.

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[pkg-pr-new]

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@slidev/client

pnpm add https://pkg.pr.new/slidevjs/slidev/@slidev/client@1905

create-slidev

pnpm add https://pkg.pr.new/slidevjs/slidev/create-slidev@1905

create-slidev-theme

pnpm add https://pkg.pr.new/slidevjs/slidev/create-slidev-theme@1905

@slidev/types

pnpm add https://pkg.pr.new/slidevjs/slidev/@slidev/types@1905

@slidev/cli

pnpm add https://pkg.pr.new/slidevjs/slidev/@slidev/cli@1905

@slidev/parser

pnpm add https://pkg.pr.new/slidevjs/slidev/@slidev/parser@1905

commit: 4100219