chore(webapp): clarify sentry tenant-attribution changelog

User-based attribution (real user.id from requireUser / orgMember.userId)
with org/project/env on tags when context is available — was the design
pivot during review.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: d-cs

.server-changes/sentry-tenant-attribution.md

@@ -3,4 +3,4 @@ area: webapp
 type: feature
 ---
 
-Attach org / project / environment context to Sentry events so "Users Impacted" counts tenants and events are filterable by org.
+Stamp Sentry events with the signed-in user so "Users Impacted" counts individual humans, and enrich events with org / project / environment tags when that context is available (dashboard URLs, authenticated API requests).