fix: mirror limits optional chaining (#568)

* docs(changeset): fix: static mirroring silently drops events when mirror has no limits configured

* fix: static mirroring silently drops events when mirror has no limits configured

---------

Co-authored-by: Ricardo Cabral <me@ricardocabral.io>

Author: tharu-jwd

.changeset/sunny-jars-try.md

@@ -0,0 +1,5 @@
+---
+"nostream": patch
+---
+
+fix: static mirroring silently drops events when mirror has no limits configured

src/app/static-mirroring-worker.ts

@@ -172,7 +172,7 @@ export class StaticMirroringWorker implements IRunnable {
 
     const eventLimits = this.settings().limits?.event ?? {}
 
-    const eventLimitOverrides = this.config.limits.event ?? {}
+    const eventLimitOverrides = this.config.limits?.event ?? {}
 
     const limits = mergeDeepRight(eventLimits, eventLimitOverrides) as EventLimits