fix: [Stateful: Home page] Not checked radio button receive focus a f…

…irst element in radio group. (elastic#195745)

Closes: elastic#195190

## Description 

According to ARIA Authoring Practices Guide, focus should be on the
checked radio button when the user reaches radio group while navigating
using only keyboard. As of now, because all the time first radio button
in the group receives focus, even if it is not checked, it may cause
confusion and could potentially lead users to unintentionally change
their selection without checking all checkboxes which exist in the
group.

## What was changed: 
1. Added name attribute for `EuiRadioGroup`. 

## Screen: 


https://github.com/user-attachments/assets/20db2394-b9db-4c40-9e72-53ee860cd066

x-pack/plugins/enterprise_search/public/applications/shared/api_key/basic_setup_form.tsx

@@ -117,6 +117,7 @@ export const BasicSetupForm: React.FC<BasicSetupFormProps> = ({
               'data-test-subj': 'create-api-key-expires-days-radio',
             },
           ]}
+          name="create-api-key-expires-group"
           idSelected={expires === null ? 'never' : 'days'}
           onChange={(id) => onChangeExpires(id === 'never' ? null : DEFAULT_EXPIRES_VALUE)}
           data-test-subj="create-api-key-expires-radio"