Ensure streamed span names have low-cardinality span names

For v11, streamed span names should become low-cardinality. Since we'll still support transactions as a fallback, we'll need to check for traceLifecycle and assign different span names for stream or static mode.

Span name rules are defined here: https://getsentry.github.io/sentry-conventions/names/

This is a large(r) task but should be splittable so that we can tackle it in parallel

lower prio but to address:

function spans
ui/component spans

JS-3078

feat: Emit low-cardinality pageload span names when streaming spans (#…

feat(core): Add low cardinality span name fallbacks (#23516)

feat: Emit low-cardinality pageload span names when streaming spans (#…

feat(core): Add low cardinality span name fallbacks (#23516)

docs: Streamline the span name changes migration section (#23607)

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Ensure streamed span names have low-cardinality span names #22350

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Ensure streamed span names have low-cardinality span names #22350

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linear-code commented on Jul 17, 2026

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