ref(core): Remove utils-hoist folder

[mydea]

This was a leftover from migrating of the @sentry/utils package to core. This PR merges the former utils together into the core/src/utils directory, which should make this a bit easier to follow/find.

[github-actions]

size-limit report 📦

Path	Size	% Change	Change
@sentry/browser	23.99 kB	-0.02%	-4 B 🔽
@sentry/browser - with treeshaking flags	23.76 kB	-0.02%	-3 B 🔽
@sentry/browser (incl. Tracing)	38.8 kB	-0.01%	-1 B 🔽
@sentry/browser (incl. Tracing, Replay)	76.93 kB	+0.02%	+10 B 🔺
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags	70.02 kB	+0.02%	+10 B 🔺
@sentry/browser (incl. Tracing, Replay with Canvas)	81.69 kB	+0.01%	+7 B 🔺
@sentry/browser (incl. Tracing, Replay, Feedback)	93.76 kB	+0.01%	+3 B 🔺
@sentry/browser (incl. Feedback)	40.73 kB	-0.01%	-2 B 🔽
@sentry/browser (incl. sendFeedback)	28.7 kB	-0.02%	-5 B 🔽
@sentry/browser (incl. FeedbackAsync)	33.59 kB	+0.01%	+1 B 🔺
@sentry/react	25.76 kB	+0.02%	+3 B 🔺
@sentry/react (incl. Tracing)	40.79 kB	+0.01%	+3 B 🔺
@sentry/vue	28.36 kB	-0.03%	-6 B 🔽
@sentry/vue (incl. Tracing)	40.67 kB	+0.01%	+3 B 🔺
@sentry/svelte	24.01 kB	-0.01%	-2 B 🔽
CDN Bundle	25.5 kB	+0.04%	+9 B 🔺
CDN Bundle (incl. Tracing)	38.88 kB	-0.24%	-93 B 🔽
CDN Bundle (incl. Tracing, Replay)	74.79 kB	-0.05%	-35 B 🔽
CDN Bundle (incl. Tracing, Replay, Feedback)	80.25 kB	+0.02%	+11 B 🔺
CDN Bundle - uncompressed	74.5 kB	-0.01%	-7 B 🔽
CDN Bundle (incl. Tracing) - uncompressed	115.32 kB	-0.01%	-2 B 🔽
CDN Bundle (incl. Tracing, Replay) - uncompressed	229.37 kB	-	-
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed	242.2 kB	-	-
@sentry/nextjs (client)	42.43 kB	-0.04%	-13 B 🔽
@sentry/sveltekit (client)	39.29 kB	+0.01%	+3 B 🔺
@sentry/node	150.79 kB	+0.01%	+4 B 🔺
@sentry/node - without tracing	98.55 kB	+0.01%	+5 B 🔺
@sentry/aws-serverless	124.3 kB	-	-

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