Bring back "refactor: remove MarkdownEditor and MarkdownViewer (#4782)""

[siddharthkp]

• Reverts Revert "refactor: remove MarkdownEditor and MarkdownViewer (#4782)" #4860
• Bring back refactor: remove MarkdownEditor and MarkdownViewer #4782

[changeset-bot]

🦋 Changeset detected

Latest commit: 95a54b0

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@primer/react	Major

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[github-actions]

size-limit report 📦

Path	Size
packages/react/dist/browser.esm.js	96.2 KB (0%)
packages/react/dist/browser.umd.js	96.54 KB (0%)

[primer-integration]

👋 Hi from github/github! Your integration PR is ready: https://github.com/github/github/pull/340366

[siddharthkp]

Failing CI build: https://github.com/github/github/actions/runs/10698094302/job/29656790627?pr=340366#step:15:6109

NX   Running target tsc for 444 projects failed

Failed tasks:

- @github-ui/markdown-editor:tsc
- @github-ui/comment-box:tsc
- @github-ui/issue-form:tsc
- @github-ui/issue-create:tsc
- @github-ui/commenting:tsc
- @github-ui/issue-body:tsc
- @github-ui/sub-issues:tsc
- @github-ui/list-view-items-issues-prs:tsc
- @github-ui/issue-viewer:tsc
- @github-ui/copilot-reference-preview:tsc
- @github-ui/copilot-chat:tsc
- @github-ui/copilot-code-chat:tsc
- @github-ui/conversations:tsc
- @github-ui/diff-lines:tsc
- @github-ui/diff-file-tree:tsc
- @github-ui/commits:tsc
- @github-ui/global-create-menu:tsc
- @github-ui/app-assets-modules:tsc
- @github-ui/global-user-nav-drawer:tsc
- @github-ui/issue-create-element:tsc
- @github-ui/comment-editor:tsc
- @github-ui/pull-request-commits:tsc
- @github-ui/copilot-immersive:tsc
- @github-ui/notifications-inbox:tsc
- @github-ui/pull-request-viewer:tsc
- @github-ui/copilot-task:tsc
- @github-ui/issues-react:tsc
- @github-ui/memex:tsc

[joshblack]

Closing in favor of: #4953