feat(editor): add configurable TipTap slash menu item limit

[TotomInc]

Summary

• Adds studio.editor.suggestion.limit to control how many items the TipTap / menu shows without a search query
• Raises the default from 42 (Nuxt UI default) to 200 so large component lists are not truncated before later groups

Usage

export default defineNuxtConfig({
  studio: {
    editor: {
      suggestion: {
        limit: 300,
      },
    },
  },
})

Test plan

• Open a markdown file with many components grouped in studio.editor.components.groups
• Trigger the / menu with no filter — all groups should be visible (up to the configured limit)
• Set limit: 42 to confirm the previous truncation behavior can be restored

[vercel]

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[pkg-pr-new]

npm i https://pkg.pr.new/nuxt-studio@545

commit: 526fede