fix: don't require a valid sentry dsn for the frontend

.woodpecker/.frontend.yml

@@ -3,7 +3,7 @@ steps:
     image: node
     directory: frontend
     environment: # SvelteKit expects these in the environment during build time.
-      - PRIVATE_SENTRY_DSN=non_existent_dsn
+      - PRIVATE_SENTRY_DSN=
       - PUBLIC_BASE_URL=http://pronouns.localhost
       - PUBLIC_MEDIA_URL=http://pronouns.localhost/media
       - PUBLIC_SHORT_BASE=http://prns.localhost

frontend/src/hooks.server.ts

@@ -2,7 +2,9 @@ import { PRIVATE_SENTRY_DSN } from "$env/static/private";
 import * as Sentry from "@sentry/node";
 import type { HandleServerError } from "@sveltejs/kit";
 
-Sentry.init({ dsn: PRIVATE_SENTRY_DSN });
+if (PRIVATE_SENTRY_DSN) {
+  Sentry.init({ dsn: PRIVATE_SENTRY_DSN });
+}
 
 export const handleError = (({ error, event }) => {
   console.log(error);