Event processor migration: Deno Context

[Lms24]

packages/deno/src/integrations/context.ts

adds Deno runtime-specific context values to events. This can most easily be ported by using processSegmentSpan and mapping the context keys to attributes.

[linear-code]

JS-2218

[github-actions]

A PR closing this issue has just been released 🚀

This issue was referenced by PR #20613, which was included in the 10.52.0 release.