fix: safari support requires we don't use

[pauldambra]

using at in the circular replacer copied from MDN implicitly moves us to safari 15.4+

it's not necessary to use at and tbh it's rare enough I can parse this version more easily

should fix #1518

[vercel]

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Name	Status	Preview	Updated (UTC)
posthog-js	✅ Ready (Inspect)	Visit Preview	Nov 26, 2024 9:30am

[github-actions]

Size Change: +50 B (0%)

Total Size: 3.14 MB

Filename	Size	Change
dist/array.full.es5.js	255 kB	+5 B (0%)
dist/array.full.js	358 kB	+5 B (0%)
dist/array.full.no-external.js	357 kB	+5 B (0%)
dist/array.js	172 kB	+5 B (0%)
dist/array.no-external.js	171 kB	+5 B (0%)
dist/main.js	173 kB	+5 B (0%)
dist/module.full.js	358 kB	+5 B (0%)
dist/module.full.no-external.js	357 kB	+5 B (0%)
dist/module.js	173 kB	+5 B (0%)
dist/module.no-external.js	171 kB	+5 B (0%)

ℹ️ View Unchanged

Filename	Size
dist/all-external-dependencies.js	206 kB
dist/dead-clicks-autocapture.js	14.3 kB
dist/exception-autocapture.js	9.37 kB
dist/external-scripts-loader.js	2.29 kB
dist/recorder-v2.js	115 kB
dist/recorder.js	115 kB
dist/surveys-preview.js	57.6 kB
dist/surveys.js	63.2 kB
dist/tracing-headers.js	1.75 kB
dist/web-vitals.js	10.3 kB

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