fix(tracing-internal): Guard for missing navigation performance entries

[lforst]

Ref #11326

@AbhiPrasad Do you know why we had a type-cast there?

[codecov]

Bundle Report

Changes will decrease total bundle size by 1.94MB ⬇️

Bundle name	Size	Change
@sentry-internal/tracing-cjs	108.01kB	1 bytes ⬆️
@sentry-internal/tracing-esm	107.27kB	1 bytes ⬆️
@sentry/node-experimental-cjs	157.11kB	0 bytes
@sentry/node-experimental-esm	150.43kB	0 bytes
@sentry-internal/replay-cjs	306.35kB	0 bytes
@sentry/vue-cjs	20.19kB	0 bytes
@sentry/vue-esm	18.85kB	0 bytes
@sentry/sveltekit-esm	61.08kB	0 bytes
@sentry-internal/replay-esm	306.46kB	0 bytes
@sentry/remix-cjs	53.62kB	0 bytes
@sentry/sveltekit-cjs	69.31kB	0 bytes
@sentry/remix-esm	48.23kB	0 bytes
@sentry/gatsby-cjs	905 bytes	0 bytes
@sentry/gatsby-esm	385 bytes	0 bytes
@sentry/nextjs-cjs	20.52kB	0 bytes
@sentry-internal/replay-canvas-cjs	29.51kB	0 bytes
@sentry-internal/replay-canvas-esm	29.43kB	0 bytes
@sentry/browser-cjs	107.32kB	0 bytes
@sentry/browser-esm	104.51kB	0 bytes
@sentry/wasm-cjs	5.2kB	0 bytes
@sentry/svelte-cjs	13.84kB	0 bytes
@sentry/astro-cjs	27.13kB	0 bytes
@sentry/wasm-esm	4.85kB	0 bytes
@sentry/react-cjs	45.04kB	0 bytes
@sentry/svelte-esm	12.72kB	0 bytes
@sentry/astro-esm	23.39kB	0 bytes
@sentry/react-esm	41.18kB	0 bytes
@sentry/nextjs-esm	20.02kB	0 bytes
@sentry/types-cjs	(removed)	35 bytes ⬇️
@sentry/types-esm	(removed)	35 bytes ⬇️
@sentry/node-esm	(removed)	333.56kB ⬇️
@sentry/aws-serverless-cjs	(removed)	14.62kB ⬇️
@sentry/bun-esm	(removed)	10.05kB ⬇️
@sentry-internal/node-integration-tests-cjs	(removed)	1.04kB ⬇️
@sentry/utils-cjs	(removed)	178.75kB ⬇️
@sentry/google-cloud-serverless-cjs	(removed)	23.0kB ⬇️
@sentry/utils-esm	(removed)	174.17kB ⬇️
@sentry-internal/node-integration-tests-esm	(removed)	888 bytes ⬇️
@sentry/core-cjs	(removed)	240.46kB ⬇️
@sentry/node-cjs	(removed)	336.97kB ⬇️
@sentry/google-cloud-serverless-esm	(removed)	19.16kB ⬇️
@sentry/bun-cjs	(removed)	13.5kB ⬇️
@sentry/profiling-node-cjs	(removed)	25.5kB ⬇️
@sentry/profiling-node-esm	(removed)	25.52kB ⬇️
@sentry/core-esm	(removed)	236.84kB ⬇️
@sentry-internal/integration-shims-cjs	(removed)	3.65kB ⬇️
@sentry/vercel-edge-cjs	(removed)	18.23kB ⬇️
@sentry-internal/integration-shims-esm	(removed)	2.99kB ⬇️
@sentry/vercel-edge-esm	(removed)	16.13kB ⬇️
@sentry-internal/feedback-cjs	(removed)	65.56kB ⬇️
@sentry/opentelemetry-cjs	(removed)	68.45kB ⬇️
@sentry-internal/feedback-esm	(removed)	65.28kB ⬇️
@sentry/opentelemetry-esm	(removed)	67.4kB ⬇️

[mydea]

I think Abhi already fixed this - the PR is empty basically? :D