chore: remove it.only in e2e test

cypress/e2e/treeSelect.spec.js

@@ -188,7 +188,7 @@ describe('treeSelect', () => {
         cy.get('.semi-button-content-left').eq(0).contains('亚洲');
     })
 
-    it.only('default open', () => {
+    it('default open', () => {
         cy.visit('http://127.0.0.1:6006/iframe.html?id=treeselect--multiple')
         cy.get('.semi-tree-select-popover').should('have.length', 1);
         cy.get('#invisible-span').eq(0).trigger('mousedown');