chore(flags): copy flag calls to flag_evaluations in local dev (#106376)

.env.development

@@ -36,6 +36,13 @@ ERROR_TRACKING_CYMBAL_BASE_URL=http://lvh.me:3302
 # Duckgres host port
 DUCKGRES_PORT=15432
 
+# Ingestion also writes $feature_flag_called events to the flag_evaluations table, for every team.
+# The write happens only when all three are set. Without it, a team on a flag_evaluations
+# mode shows no data in the flag Usage tab.
+INGESTION_OUTPUT_FLAG_EVALUATIONS_TOPIC=clickhouse_flag_evaluations
+INGESTION_FLAG_EVALUATIONS_MODE=dual_write
+INGESTION_FLAG_EVALUATIONS_TEAMS=*
+
 # Dagster
 DAGSTER_UI_HOST=localhost
 DAGSTER_UI_PORT=3030