fix(workspace): show member emails (#2393)

Co-authored-by: dadachann <185672915+dadachann@users.noreply.github.com>

web/tests/e2e/fixtures/langbot-api.ts

@@ -81,6 +81,7 @@ export interface WorkspaceEntryMock {
     uuid: string;
     workspace_uuid: string;
     account_uuid: string;
+    display_name: string;
     email: string;
     role: 'owner' | 'admin' | 'developer' | 'operator' | 'viewer';
     status: 'active';
@@ -155,6 +156,7 @@ export function makeWorkspaceEntry(
       uuid: `membership-${uuid}`,
       workspace_uuid: uuid,
       account_uuid: 'account-playwright',
+      display_name: 'Playwright Admin',
       email: 'admin@example.com',
       role: 'owner',
       status: 'active',