fix: don't run match-media if it doesn't exist

[mlrawlings]

Scope

match-media

Description

Adds an additional guard to check if window.matchMedia exists

Motivation and Context

Prior version used process.browser. The window check will return true in environments that have window but aren't the browser (JSDOM, probably Deno)

Screenshots (if appropriate):

Checklist:

• [ ] I have updated/added documentation affected by my changes.
• [ ] I have added tests to cover my changes.