fix(utils): Handle when requests get aborted in fetch instrumentation

[AbhiPrasad]

resolves #13187

WIP as we get better test cases

[github-actions]

size-limit report 📦

Path	Size
@sentry/browser	22.46 KB (-0.03% 🔽)
@sentry/browser (incl. Tracing)	34.24 KB (+0.01% 🔺)
@sentry/browser (incl. Tracing, Replay)	70.29 KB (0%)
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags	63.63 KB (-0.01% 🔽)
@sentry/browser (incl. Tracing, Replay with Canvas)	74.69 KB (0%)
@sentry/browser (incl. Tracing, Replay, Feedback)	87.29 KB (0%)
@sentry/browser (incl. Tracing, Replay, Feedback, metrics)	89.13 KB (0%)
@sentry/browser (incl. metrics)	26.76 KB (-0.02% 🔽)
@sentry/browser (incl. Feedback)	39.39 KB (-0.02% 🔽)
@sentry/browser (incl. sendFeedback)	27.08 KB (-0.02% 🔽)
@sentry/browser (incl. FeedbackAsync)	31.72 KB (-0.02% 🔽)
@sentry/react	25.22 KB (-0.04% 🔽)
@sentry/react (incl. Tracing)	37.23 KB (-0.02% 🔽)
@sentry/vue	26.6 KB (-0.03% 🔽)
@sentry/vue (incl. Tracing)	36.08 KB (-0.01% 🔽)
@sentry/svelte	22.59 KB (-0.03% 🔽)
CDN Bundle	23.65 KB (-0.03% 🔽)
CDN Bundle (incl. Tracing)	35.89 KB (-0.01% 🔽)
CDN Bundle (incl. Tracing, Replay)	70.32 KB (-0.01% 🔽)
CDN Bundle (incl. Tracing, Replay, Feedback)	75.59 KB (-0.01% 🔽)
CDN Bundle - uncompressed	69.4 KB (-0.01% 🔽)
CDN Bundle (incl. Tracing) - uncompressed	106.32 KB (+0.01% 🔺)
CDN Bundle (incl. Tracing, Replay) - uncompressed	218.17 KB (+0.01% 🔺)
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed	231.08 KB (+0.01% 🔺)
@sentry/nextjs (client)	37.08 KB (-0.02% 🔽)
@sentry/sveltekit (client)	34.81 KB (-0.01% 🔽)
@sentry/node	114.77 KB (+0.01% 🔺)
@sentry/node - without tracing	89.33 KB (+0.01% 🔺)
@sentry/aws-serverless	98.5 KB (+0.01% 🔺)

[AbhiPrasad]

okay I think the e2e test covers it, but we probably also want some tests in https://github.com/getsentry/sentry-javascript/tree/develop/dev-packages/browser-integration-tests to validate in firefox and safari as well.