Migration typescript/team.js (#25811)

* refactor: convert file team.js to ts

- convert file to typescript
- create types in file

* refactor: use optional chaining operator for link.click

---------

Co-authored-by: Mattermost Build <build@mattermost.com>

e2e-tests/cypress/tests/support/ui/team.ts

@@ -0,0 +1,42 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+/**
+ * Invites a member to the current team
+ * @param {string} username - the username
+ */
+function uiInviteMemberToCurrentTeam(username: string) {
+    // # Open member invite screen
+    cy.uiOpenTeamMenu('Invite People');
+
+    // # Open members section if licensed for guest accounts
+    cy.findByTestId('invitationModal').
+        then((container) => container.find('[data-testid="inviteMembersLink"]')).
+        then((link) => link?.click());
+
+    // # Enter bot username and submit
+    cy.get('.users-emails-input__control input').typeWithForce(username).as('input');
+    cy.get('.users-emails-input__option ').contains(`@${username}`);
+    cy.get('@input').typeWithForce('{enter}');
+    cy.findByTestId('inviteButton').click();
+
+    // * Verify user invited to team
+    cy.get('.invitation-modal-confirm--sent .InviteResultRow').
+        should('contain.text', `@${username}`).
+        and('contain.text', 'This member has been added to the team.');
+
+    // # Close, return
+    cy.findByTestId('confirm-done').click();
+}
+Cypress.Commands.add('uiInviteMemberToCurrentTeam', uiInviteMemberToCurrentTeam);
+
+declare global {
+    // eslint-disable-next-line @typescript-eslint/no-namespace
+    namespace Cypress {
+        interface Chainable {
+            uiInviteMemberToCurrentTeam: typeof uiInviteMemberToCurrentTeam;
+        }
+    }
+}
+
+export {};