fix(browser): filter implausible LCP values

[logaretm]

Summary

• add an LCP plausibility guard to drop implausible browser-reported values above 60 seconds
• apply the guard to both pageload LCP measurements and standalone LCP spans
• add focused unit tests for valid and invalid LCP values

Testing

• yarn test:unit test/metrics/lcp.test.ts test/metrics/inpt.test.ts
• yarn lint packages/browser-utils/src/metrics/lcp.ts packages/browser-utils/src/metrics/browserMetrics.ts packages/browser-utils/test/metrics/lcp.test.ts

[github-actions]

size-limit report 📦

Path	Size	% Change	Change
@sentry/browser	25.78 kB	-	-
@sentry/browser - with treeshaking flags	24.27 kB	-	-
@sentry/browser (incl. Tracing)	42.81 kB	+0.1%	+42 B 🔺
@sentry/browser (incl. Tracing, Profiling)	47.43 kB	+0.07%	+33 B 🔺
@sentry/browser (incl. Tracing, Replay)	81.71 kB	+0.04%	+25 B 🔺
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags	71.25 kB	+0.05%	+34 B 🔺
@sentry/browser (incl. Tracing, Replay with Canvas)	86.42 kB	+0.03%	+22 B 🔺
@sentry/browser (incl. Tracing, Replay, Feedback)	98.63 kB	+0.04%	+34 B 🔺
@sentry/browser (incl. Feedback)	42.59 kB	-	-
@sentry/browser (incl. sendFeedback)	30.45 kB	-	-
@sentry/browser (incl. FeedbackAsync)	35.45 kB	-	-
@sentry/browser (incl. Metrics)	27.07 kB	-	-
@sentry/browser (incl. Logs)	27.2 kB	-	-
@sentry/browser (incl. Metrics & Logs)	27.89 kB	-	-
@sentry/react	27.53 kB	-	-
@sentry/react (incl. Tracing)	45.13 kB	+0.09%	+38 B 🔺
@sentry/vue	30.61 kB	-	-
@sentry/vue (incl. Tracing)	44.66 kB	+0.09%	+38 B 🔺
@sentry/svelte	25.8 kB	-	-
CDN Bundle	28.46 kB	-	-
CDN Bundle (incl. Tracing)	43.86 kB	+0.1%	+42 B 🔺
CDN Bundle (incl. Logs, Metrics)	29.83 kB	-	-
CDN Bundle (incl. Tracing, Logs, Metrics)	44.93 kB	+0.08%	+33 B 🔺
CDN Bundle (incl. Replay, Logs, Metrics)	68.73 kB	-	-
CDN Bundle (incl. Tracing, Replay)	80.81 kB	+0.04%	+26 B 🔺
CDN Bundle (incl. Tracing, Replay, Logs, Metrics)	81.86 kB	+0.04%	+29 B 🔺
CDN Bundle (incl. Tracing, Replay, Feedback)	86.35 kB	+0.05%	+42 B 🔺
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics)	87.37 kB	+0.03%	+25 B 🔺
CDN Bundle - uncompressed	83.12 kB	-	-
⛔️ CDN Bundle (incl. Tracing) - uncompressed (max: 130 kB)	130.03 kB	+0.07%	+87 B 🔺
CDN Bundle (incl. Logs, Metrics) - uncompressed	87.27 kB	-	-
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed	133.45 kB	+0.07%	+87 B 🔺
CDN Bundle (incl. Replay, Logs, Metrics) - uncompressed	210.63 kB	-	-
CDN Bundle (incl. Tracing, Replay) - uncompressed	247.29 kB	+0.04%	+87 B 🔺
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) - uncompressed	250.69 kB	+0.04%	+87 B 🔺
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed	260.21 kB	+0.04%	+87 B 🔺
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) - uncompressed	263.59 kB	+0.04%	+87 B 🔺
@sentry/nextjs (client)	47.57 kB	+0.1%	+43 B 🔺
@sentry/sveltekit (client)	43.29 kB	+0.11%	+46 B 🔺
@sentry/node-core	57.94 kB	+0.02%	+6 B 🔺
@sentry/node	174.78 kB	+0.01%	+7 B 🔺
@sentry/node - without tracing	97.89 kB	+0.03%	+21 B 🔺
@sentry/aws-serverless	115.12 kB	+0.01%	+8 B 🔺

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