feat(browser)!: Remove FID web vital collection

[Lms24]

This PR removes the FID web vital collection logic from the browser SDK. This is a behaviour breaking change and should not be backported to v9.

For reasons see #16560 but the TLDR is that FID has long been deprecated and replaced by INP.

Added a note to the changelog with possible implications on the product. Also thought of a minor edge case where the removal could have an effect on SDK code: If a filtering decision in beforeSend depends on the presence of the FID measurement. A very niche case IMHO but probably good to mention anyway.

closes #16560

[github-actions]

size-limit report 📦

Path	Size	% Change	Change
@sentry/browser	23.75 kB	-	-
@sentry/browser - with treeshaking flags	22.34 kB	-	-
@sentry/browser (incl. Tracing)	39.41 kB	-0.53%	-208 B 🔽
@sentry/browser (incl. Tracing, Replay)	77.54 kB	-0.33%	-250 B 🔽
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags	67.38 kB	-0.33%	-217 B 🔽
@sentry/browser (incl. Tracing, Replay with Canvas)	82.24 kB	-0.31%	-251 B 🔽
@sentry/browser (incl. Tracing, Replay, Feedback)	94.35 kB	-0.26%	-237 B 🔽
@sentry/browser (incl. Feedback)	40.45 kB	-	-
@sentry/browser (incl. sendFeedback)	28.43 kB	-	-
@sentry/browser (incl. FeedbackAsync)	33.34 kB	-	-
@sentry/react	25.5 kB	-	-
@sentry/react (incl. Tracing)	41.4 kB	-0.48%	-197 B 🔽
@sentry/vue	28.18 kB	-	-
@sentry/vue (incl. Tracing)	41.22 kB	-0.46%	-189 B 🔽
@sentry/svelte	23.78 kB	-	-
CDN Bundle	25.18 kB	-	-
CDN Bundle (incl. Tracing)	39.22 kB	-0.51%	-201 B 🔽
CDN Bundle (incl. Tracing, Replay)	75.21 kB	-0.28%	-206 B 🔽
CDN Bundle (incl. Tracing, Replay, Feedback)	80.65 kB	-0.3%	-239 B 🔽
CDN Bundle - uncompressed	73.44 kB	-	-
CDN Bundle (incl. Tracing) - uncompressed	116.11 kB	-0.65%	-748 B 🔽
CDN Bundle (incl. Tracing, Replay) - uncompressed	230.09 kB	-0.4%	-903 B 🔽
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed	242.91 kB	-0.38%	-903 B 🔽
@sentry/nextjs (client)	43.43 kB	-0.45%	-195 B 🔽
@sentry/sveltekit (client)	39.84 kB	-0.5%	-200 B 🔽
@sentry/node-core	47.24 kB	-	-
@sentry/node	143.81 kB	-	-
@sentry/node - without tracing	91.31 kB	-	-
@sentry/aws-serverless	102.75 kB	+0.01%	+1 B 🔺

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