fix(server): default workspace avatar size (#10229)

packages/backend/server/src/mails/common.ts

@@ -7,4 +7,5 @@ export const TEST_USER: UserProps = {
 
 export const TEST_WORKSPACE: WorkspaceProps = {
   name: 'Test Workspace',
+  avatar: 'https://app.affine.pro/favicon-192.png',
 };

packages/backend/server/src/mails/components/workspace.tsx

@@ -11,8 +11,8 @@ export const Workspace = (props: WorkspaceProps) => {
     <AvatarWithName
       name={props.name}
       img={props.avatar}
-      width={`${props.size}px`}
-      height={`${props.size}px`}
+      width={`${props.size ?? 20}px`}
+      height={`${props.size ?? 20}px`}
     />
   );
 };