fix delete_all endpoint for testnet

preload.js

@@ -46,7 +46,7 @@ window.getServerTrustRoot = () => config.serverTrustRoot;
 window.JobQueue = JobQueue;
 window.isBehindProxy = () => Boolean(config.proxyUrl);
 
-window.getStoragePubKey = key => (window.isDev() ? key.substring(0, key.length - 2) : key);
+window.getStoragePubKey = key => (window.isDev() ? key.substring(2) : key);
 
 window.getDefaultFileServer = () => config.defaultFileServer;
 window.initialisedAPI = false;

ts/session/utils/syncUtils.ts

@@ -174,7 +174,6 @@ export const forceNetworkDeletion = async (): Promise<Array<string> | null> => {
             timestamp,
             signature: signatureBase64,
           };
-
           const ret = await snodeRpc(
             'delete_all',
             deleteMessageParams,