feat(billing): Add notification setting for trace metric bytes

Add QUOTA_TRACE_METRIC_BYTES to NotificationSettingEnum so users can
manage quota notifications for the trace_metric_bytes data category,
matching the pattern used for other quota notification types.

Refs BIL-2216
Co-Authored-By: Claude Sonnet 4 <noreply@anthropic.com>

Made-with: Cursor

Author: brendanhsentry

src/sentry/notifications/types.py

@@ -34,6 +34,7 @@ class NotificationSettingEnum(ValueEqualityEnum):
     QUOTA_SEER_BUDGET = "quotaSeerBudget"
     QUOTA_SPEND_ALLOCATIONS = "quotaSpendAllocations"
     QUOTA_LOG_BYTES = "quotaLogBytes"
+    QUOTA_TRACE_METRIC_BYTES = "quotaTraceMetricBytes"
     QUOTA_SEER_USERS = "quotaSeerUsers"
     QUOTA_SIZE_ANALYSIS = "quotaSizeAnalyses"
     SPIKE_PROTECTION = "spikeProtection"
@@ -152,6 +153,10 @@ class UserOptionsSettingsKey(Enum):
         NotificationSettingsOptionEnum.ALWAYS,
         NotificationSettingsOptionEnum.NEVER,
     },
+    NotificationSettingEnum.QUOTA_TRACE_METRIC_BYTES: {
+        NotificationSettingsOptionEnum.ALWAYS,
+        NotificationSettingsOptionEnum.NEVER,
+    },
     NotificationSettingEnum.QUOTA_SEER_USERS: {
         NotificationSettingsOptionEnum.ALWAYS,
         NotificationSettingsOptionEnum.NEVER,

tests/sentry/notifications/api/endpoints/test_user_notification_settings_options.py

@@ -104,6 +104,7 @@ def test_user_scope(self) -> None:
             NotificationSettingEnum.QUOTA_MONITOR_SEATS,
             NotificationSettingEnum.QUOTA_SPANS,
             NotificationSettingEnum.QUOTA_LOG_BYTES,
+            NotificationSettingEnum.QUOTA_TRACE_METRIC_BYTES,
             NotificationSettingEnum.QUOTA_SEER_USERS,
             NotificationSettingEnum.QUOTA_SIZE_ANALYSIS,
         ]