Add missing Chronus entry for enum emitter changes

Co-authored-by: l0lawrence <100643745+l0lawrence@users.noreply.github.com>

Author: Copilot

.chronus/changes/enum-to-ts-2026-06-02.md

@@ -0,0 +1,8 @@
+---
+changeKind: internal
+packages:
+  - "@typespec/emitter-framework"
+  - "@typespec/http-client-python"
+---
+
+Refine Python enum generation plumbing in emitter-framework and http-client-python.