Translate Custom UI examples to JSX

[ziad-saab]

Description

• Translate Custom UI examples to JSX
• Add flaskOnly prop for TabItem
• Add deprecation warning on Custom UI page
• Add Custom UI with JSX page

Issue(s) fixed

Fixes #

Preview

Checklist

Complete this checklist before merging your PR:

• [ ] If this PR contains a major change to the documentation content, I have added an entry to the top of the "What's new?" page.
• [ ] The proposed changes have been reviewed and approved by a member of the documentation team.

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Name	Status	Preview	Comments	Updated (UTC)
metamask-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 31, 2024 1:21pm
metamask-docs-hftx	❌ Failed (Inspect)			Jul 31, 2024 1:21pm

[github-actions[bot]]

Preview published: zs/snaps-jsx

[github-actions[bot]]

Preview published: zs/snaps-jsx

[github-actions[bot]]

Preview published: zs/snaps-jsx

[hmalik88]

Probably important to mention somewhere that JSX syntax will only work with .tsx or .jsx files

[Montoya]

Probably important to mention somewhere that JSX syntax will only work with .tsx or .jsx files

Just did that in my commit

[github-actions[bot]]

Preview published: zs/snaps-jsx

[github-actions[bot]]

Preview published: zs/snaps-jsx

[github-actions[bot]]

Preview published: zs/snaps-jsx

[github-actions[bot]]

Preview published: zs/snaps-jsx

[github-actions[bot]]

Preview published: zs/snaps-jsx

[github-actions[bot]]

Preview published: zs/snaps-jsx

[github-actions[bot]]

Preview published: zs/snaps-jsx

[github-actions[bot]]

Preview published: zs/snaps-jsx

[Montoya]

This technically should not be merged until June 20....

[alexandratran]

@Montoya Is this ready to merge?

[Montoya]

Almost ready to merge @alexandratran as soon as Extension and Flask v12 are published