⚗️(frontend) capture console.error in PostHog

Forward `console.error` calls to PostHog on top of the existing
exception capture.

This is experimental: the goal is to gather more information about
buggy situations that do not surface as thrown exceptions today.
May be reverted or filtered depending on the signal-to-noise ratio.

src/frontend/src/features/analytics/hooks/useAnalytics.ts

@@ -42,6 +42,11 @@ export const useAnalytics = ({
         person_profiles: 'always',
         capture_pageview: 'history_change',
         capture_pageleave: true,
+        capture_exceptions: {
+          capture_unhandled_errors: true,
+          capture_unhandled_rejections: true,
+          capture_console_errors: true,
+        },
       })
     })
   }, [id, host, flags_api_host, isDisabled])