fix(utils): Dereference DOM events after they have servered their purpose

[lforst]

Fixes #9204

[github-actions]

size-limit report 📦

Path	Size
@sentry/browser (incl. Tracing, Replay) - Webpack (gzipped)	84.23 KB (+0.02% 🔺)
@sentry/browser (incl. Tracing) - Webpack (gzipped)	31.42 KB (+0.04% 🔺)
@sentry/browser - Webpack (gzipped)	22.01 KB (+0.04% 🔺)
@sentry/browser (incl. Tracing, Replay) - ES6 CDN Bundle (gzipped)	78.78 KB (+0.01% 🔺)
@sentry/browser (incl. Tracing) - ES6 CDN Bundle (gzipped)	28.6 KB (+0.01% 🔺)
@sentry/browser - ES6 CDN Bundle (gzipped)	21.02 KB (+0.05% 🔺)
@sentry/browser (incl. Tracing, Replay) - ES6 CDN Bundle (minified & uncompressed)	254.48 KB (+0.01% 🔺)
@sentry/browser (incl. Tracing) - ES6 CDN Bundle (minified & uncompressed)	86.76 KB (+0.02% 🔺)
@sentry/browser - ES6 CDN Bundle (minified & uncompressed)	62.45 KB (+0.02% 🔺)
@sentry/browser (incl. Tracing) - ES5 CDN Bundle (gzipped)	31.48 KB (+0.06% 🔺)
@sentry/react (incl. Tracing, Replay) - Webpack (gzipped)	84.26 KB (+0.02% 🔺)
@sentry/react - Webpack (gzipped)	22.05 KB (+0.04% 🔺)
@sentry/nextjs Client (incl. Tracing, Replay) - Webpack (gzipped)	102.22 KB (+0.01% 🔺)
@sentry/nextjs Client - Webpack (gzipped)	50.99 KB (+0.01% 🔺)