[Safari] Section picker dropdown not working on Safari

[leemthompo]

Describe the bug

not working on safari

Expected behavior

For it to work

Steps to reproduce

• In safari, go to any page, such as https://staging-website.elastic.co/docs/get-started/
• Try to click on the section picker dropdown

Tooling

• docs-builder
• migration tooling
• I'm not sure

[reakaleek]

Thank you for using safari @leemthompo 😅

Fixed by #1087