Dev server: activity

[davbree]

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Summary

Tweak which requests are considered activity. Now we filter out redirects (including to internal plugins) and non-GET requests.

ref CRE-1189

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[github-actions]

📊 Benchmark results

Comparing with 1706c8c

• Dependency count: 1,317 (no change)
• Package size: 480 MB ⬇️ 0.00% decrease vs. 1706c8c
• Number of ts-expect-error directives: 978 (no change)