fix: email pkg tsconfig to encompass .ts(x) files

[karelvuong]

Description

Old tsconfig.json did not include .tsx files in the ./templates folder and was showing errors per screenshot below. Minor fix!

Checklist

• My code follows the code style of this project.
• I have performed a self-review of my code.
• I have commented my code, particularly in hard-to-understand areas.
• I have updated the documentation, if necessary.
• I have added tests that prove my fix is effective or my feature works.
• New and existing tests pass locally with my changes.

Screenshots (if applicable)

[vercel]

@karelvuong is attempting to deploy a commit to the Vercel Team on Vercel.

A member of the Team first needs to authorize it.

[haydenbleasel]

Nice one @karelvuong 🙏

[github-actions]

🚀 PR was released in v5.2.3 🚀