accept authorization to be undefined

app/gen-server/lib/HomeDBManager.ts

@@ -1953,7 +1953,7 @@ export class HomeDBManager extends EventEmitter {
   // Update the webhook url in the webhook's corresponding secret (note: the webhook identifier is
   // its secret identifier).
   public async updateWebhookUrlAndAuth(
-    id: string, docId: string, url: string, auth: string, outerManager?: EntityManager) {
+    id: string, docId: string, url: string, auth: string | undefined, outerManager?: EntityManager) {
     return await this._runInTransaction(outerManager, async manager => {
       const value = await this.getSecret(id, docId, manager);
       if (!value) {

app/server/lib/DocApi.ts

@@ -935,8 +935,8 @@ export class DocWorkerApi {
         const triggerRowId = activeDoc.triggers.getWebhookTriggerRecord(webhookId).id;
 
         // update url and authorization header in homedb
-        if (url) {
-          await this._dbManager.updateWebhookUrlAndAuth(webhookId, docId, url, authorization || "");
+        if (url || authorization) {
+          await this._dbManager.updateWebhookUrlAndAuth(webhookId, docId, url, authorization || undefined);
           activeDoc.triggers.webhookDeleted(webhookId); // clear cache
         }