Description

If __experimentalExpandOnFocus is set for <FormTokenField> component, the suggestion list is expanded after page load without any user interaction.

Step-by-step reproduction instructions

1. Add the following story to packages/components/src/form-token-field/stories/index.tsx:

export const ExpandOnFocus: ComponentStory< typeof FormTokenField > =
	DefaultTemplate.bind( {} );
ExpandOnFocus.args = {
	...Default.args,
	__experimentalExpandOnFocus: true,
};

2. See suggestion list is expanded without focusing on the token input field.

Note: The DropdownSelector story in #42527 can be used for testing this issue.

Screenshots, screen recording, code snippet

Environment info

No response

Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

Yes