add label pref switch metric

src/state/queries/preferences/index.ts

@@ -7,6 +7,7 @@ import {useMutation, useQuery, useQueryClient} from '@tanstack/react-query'
 
 import {PROD_DEFAULT_FEED} from '#/lib/constants'
 import {replaceEqualDeep} from '#/lib/functions'
+import {logEvent} from '#/lib/statsig/statsig'
 import {getAge} from '#/lib/strings/time'
 import {STALE} from '#/state/queries'
 import {
@@ -96,6 +97,7 @@ export function usePreferencesSetContentLabelMutation() {
   >({
     mutationFn: async ({label, visibility, labelerDid}) => {
       await agent.setContentLabelPref(label, visibility, labelerDid)
+      logEvent('moderation:changeLabelPreference', {preference: visibility})
       // triggers a refetch
       await queryClient.invalidateQueries({
         queryKey: preferencesQueryKey,