fix(cli): use || instead of ?? because getEndpoint() can return ""

Since the `??` operator only returns the right side if the left side is
null or undefined, it will not work if `getEndpoint()` returns an empty
string. `||`, however, will return the right side if the left side is
an empty string.

Author: stnguyen90

templates/cli/lib/commands/generic.js.twig

@@ -14,7 +14,7 @@ const DEFAULT_ENDPOINT = 'https://cloud.appwrite.io/v1';
 const loginCommand = async ({ email, password, endpoint, mfa, code }) => {
     const oldCurrent = globalConfig.getCurrentSession();
 
-    const configEndpoint = endpoint ?? globalConfig.getEndpoint() ?? DEFAULT_ENDPOINT;
+    const configEndpoint = (endpoint ?? globalConfig.getEndpoint()) || DEFAULT_ENDPOINT;
 
     if (globalConfig.getCurrentSession() !== '') {
         log('You are currently signed in as ' + globalConfig.getEmail());