refactor: remove hacky email login (#4075)

Co-authored-by: Alex Yang <himself65@outlook.com>

packages/infra/src/type.ts

@@ -266,9 +266,9 @@ export interface WorkspaceEvents {
 }
 
 export interface UIEvents {
-  onStartLogin: (fn: (options: { email: string }) => void) => () => void;
+  onStartLogin: (fn: (options: { email?: string }) => void) => () => void;
   onFinishLogin: (
-    fn: (result: { success: boolean; email: string }) => void
+    fn: (result: { success: boolean; email?: string }) => void
   ) => () => void;
 }