refactor: use geolocation from @netlify/dev-utils package

[keanu-a]

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Summary

Replaced geolocation types and variables with @netlify/dev-utils geolocation primitives

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[github-actions]

📊 Benchmark results

Comparing with ea66dd2

• Dependency count: 1,081 (no change)
• Package size: 288 MB ⬇️ 0.00% decrease vs. ea66dd2
• Number of ts-expect-error directives: 399 (no change)

[serhalp]

Looks good, just a few minor suggestions!

[serhalp]

LGTM

naming nitpick: might wanna call this one a refactor: and use a (present tense) verb to describe what's changing, e.g. "replace duplicated geolocation..." or "use geolocation from..."