Update Trace Explore Docs

[Dhrumil-Sentry]

Which part? Which one?

New Trace Explorer docs: https://sentry-docs-git-scttcper-seer-docs.sentry.dev/product/explore/new-trace-explorer/

Description

In preparation of GA by next week

-Update the new docs, and plan for them to be the trace explore docs

• Update Screenshots
• Delete https://sentry-docs-git-scttcper-seer-docs.sentry.dev/product/explore/traces/