Add referrer for AI analytics pages (#69157)

Backend change

src/sentry/snuba/referrer.py

@@ -164,6 +164,7 @@ class Referrer(Enum):
     API_ORGANIZATION_VITALS_PER_PROJECT = "api.organization-vitals-per-project"
     API_ORGANIZATION_VITALS = "api.organization-vitals"
     API_PERFORMANCE_DURATIONPERCENTILECHART = "api.performance.durationpercentilechart"
+    API_AI_PIPELINES_VIEW = "api.ai-pipelines.view"
     API_PERFORMANCE_GENERIC_WIDGET_CHART_APDEX_AREA_METRICS_ENHANCED = (
         "api.performance.generic-widget-chart.apdex-area.metrics-enhanced"
     )