fix: Form label hide title on help icon and optional text (#31785)

close #31769

components/config-provider/__tests__/__snapshots__/form.test.js.snap

@@ -18,6 +18,7 @@ exports[`ConfigProvider.Form form requiredMark set requiredMark optional 1`] = `
         年龄
         <span
           class="ant-form-item-optional"
+          title=""
         >
           (optional)
         </span>

components/form/FormItemLabel.tsx

@@ -88,7 +88,7 @@ const FormItemLabel: React.FC<FormItemLabelProps & { required?: boolean; prefixC
           const { icon = <QuestionCircleOutlined />, ...restTooltipProps } = tooltipProps;
           const tooltipNode = (
             <Tooltip {...restTooltipProps}>
-              {React.cloneElement(icon, { className: `${prefixCls}-item-tooltip` })}
+              {React.cloneElement(icon, { className: `${prefixCls}-item-tooltip`, title: '' })}
             </Tooltip>
           );
 
@@ -105,7 +105,7 @@ const FormItemLabel: React.FC<FormItemLabelProps & { required?: boolean; prefixC
           labelChildren = (
             <>
               {labelChildren}
-              <span className={`${prefixCls}-item-optional`}>
+              <span className={`${prefixCls}-item-optional`} title="">
                 {formLocale?.optional || defaultLocale.Form?.optional}
               </span>
             </>

components/form/__tests__/__snapshots__/demo.test.js.snap

@@ -3244,6 +3244,7 @@ exports[`renders ./components/form/demo/register.md correctly 1`] = `
           aria-label="question-circle"
           class="anticon anticon-question-circle ant-form-item-tooltip"
           role="img"
+          title=""
         >
           <svg
             aria-hidden="true"
@@ -3763,6 +3764,7 @@ exports[`renders ./components/form/demo/required-mark.md correctly 1`] = `
         Required Mark
         <span
           class="ant-form-item-optional"
+          title=""
         >
           (optional)
         </span>
@@ -3859,6 +3861,7 @@ exports[`renders ./components/form/demo/required-mark.md correctly 1`] = `
           aria-label="question-circle"
           class="anticon anticon-question-circle ant-form-item-tooltip"
           role="img"
+          title=""
         >
           <svg
             aria-hidden="true"
@@ -3913,6 +3916,7 @@ exports[`renders ./components/form/demo/required-mark.md correctly 1`] = `
           aria-label="info-circle"
           class="anticon anticon-info-circle ant-form-item-tooltip"
           role="img"
+          title=""
         >
           <svg
             aria-hidden="true"
@@ -3933,6 +3937,7 @@ exports[`renders ./components/form/demo/required-mark.md correctly 1`] = `
         </span>
         <span
           class="ant-form-item-optional"
+          title=""
         >
           (optional)
         </span>