fix(web-vitals): Check for undefined navigation entry

[AbhiPrasad]

resolves #11310

[codecov]

Bundle Report

Changes will decrease total bundle size by 983.75kB ⬇️

Bundle name	Size	Change
@sentry-internal/tracing-cjs	108.01kB	35 bytes ⬆️
@sentry-internal/tracing-esm	107.26kB	35 bytes ⬆️
@sentry-internal/replay-canvas-cjs	29.43kB	0 bytes
@sentry/browser-cjs	107.32kB	166 bytes ⬆️
@sentry-internal/replay-canvas-esm	29.34kB	0 bytes
@sentry/node-cjs	336.97kB	0 bytes
@sentry/aws-serverless-cjs	20.29kB	5.67kB ⬆️
@sentry/remix-cjs	53.62kB	0 bytes
@sentry/remix-esm	48.23kB	0 bytes
@sentry/nextjs-esm	20.02kB	0 bytes
@sentry/nextjs-cjs	163.47kB	142.96kB ⬆️
@sentry/browser-esm	104.51kB	166 bytes ⬆️
@sentry/node-esm	333.56kB	0 bytes
@sentry/profiling-node-cjs	25.5kB	0 bytes
@sentry/node-experimental-cjs	157.11kB	0 bytes
@sentry/react-esm	41.18kB	0 bytes
@sentry/profiling-node-esm	25.52kB	0 bytes
@sentry/node-experimental-esm	150.43kB	0 bytes
@sentry/wasm-cjs	5.2kB	5.2kB ⬆️
@sentry/astro-cjs	27.13kB	0 bytes
@sentry-internal/node-integration-tests-cjs	1.04kB	0 bytes
@sentry/svelte-cjs	13.84kB	0 bytes
@sentry-internal/replay-cjs	306.31kB	0 bytes
@sentry/vue-cjs	20.19kB	0 bytes
@sentry/bun-cjs	13.5kB	0 bytes
@sentry/react-cjs	45.04kB	0 bytes
@sentry/astro-esm	23.39kB	0 bytes
@sentry-internal/node-integration-tests-esm	888 bytes	0 bytes
@sentry/wasm-esm	4.85kB	0 bytes
@sentry/vue-esm	18.85kB	0 bytes
@sentry/google-cloud-serverless-cjs	23.0kB	0 bytes
@sentry/gatsby-cjs	905 bytes	0 bytes
@sentry/bun-esm	10.05kB	0 bytes
@sentry/sveltekit-cjs	69.31kB	0 bytes
@sentry/gatsby-esm	385 bytes	0 bytes
@sentry/sveltekit-esm	61.08kB	0 bytes
@sentry/google-cloud-serverless-esm	19.16kB	0 bytes
@sentry-internal/replay-esm	306.42kB	0 bytes
@sentry/svelte-esm	12.72kB	0 bytes
@sentry/types-cjs	(removed)	35 bytes ⬇️
@sentry/utils-cjs	(removed)	178.75kB ⬇️
@sentry/core-cjs	(removed)	240.46kB ⬇️
@sentry/utils-esm	(removed)	174.17kB ⬇️
@sentry/core-esm	(removed)	236.84kB ⬇️
@sentry/types-esm	(removed)	35 bytes ⬇️
@sentry/opentelemetry-cjs	(removed)	68.45kB ⬇️
@sentry-internal/integration-shims-cjs	(removed)	3.65kB ⬇️
@sentry/vercel-edge-cjs	(removed)	18.23kB ⬇️
@sentry/vercel-edge-esm	(removed)	16.13kB ⬇️
@sentry-internal/integration-shims-esm	(removed)	2.99kB ⬇️
@sentry-internal/feedback-cjs	(removed)	65.56kB ⬇️
@sentry-internal/feedback-esm	(removed)	65.28kB ⬇️
@sentry/opentelemetry-esm	(removed)	67.4kB ⬇️

[github-actions]

size-limit report 📦

Path	Size
@sentry/browser (incl. Tracing, Replay, Feedback)	80.45 KB (-0.01% 🔽)
@sentry/browser (incl. Tracing, Replay)	71.79 KB (-0.01% 🔽)
@sentry/browser (incl. Tracing, Replay with Canvas)	75.61 KB (+0.01% 🔺)
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags	65.36 KB (+0.02% 🔺)
@sentry/browser (incl. Tracing)	36.62 KB (-0.04% 🔽)
@sentry/browser (incl. browserTracingIntegration)	36.62 KB (-0.04% 🔽)
@sentry/browser (incl. feedbackIntegration)	31.53 KB (+0.47% 🔺)
@sentry/browser (incl. feedbackModalIntegration)	31.63 KB (+0.41% 🔺)
@sentry/browser (incl. feedbackScreenshotIntegration)	31.64 KB (+0.41% 🔺)
@sentry/browser (incl. sendFeedback)	27.59 KB (+0.52% 🔺)
@sentry/browser	22.75 KB (+0.64% 🔺)
CDN Bundle (incl. Tracing, Replay, Feedback)	74.9 KB (+0.01% 🔺)
CDN Bundle (incl. Tracing, Replay)	69.73 KB (+0.01% 🔺)
CDN Bundle (incl. Tracing)	36.27 KB (+0.05% 🔺)
CDN Bundle	24.02 KB (+0.19% 🔺)
CDN Bundle (incl. Tracing, Replay) - uncompressed	218.8 KB (-0.04% 🔽)
CDN Bundle (incl. Tracing) - uncompressed	109.46 KB (+0.01% 🔺)
CDN Bundle - uncompressed	71.08 KB (+0.19% 🔺)
@sentry/react (incl. Tracing, Replay)	71.78 KB (-0.01% 🔽)
@sentry/react	22.78 KB (+0.65% 🔺)