[ConditionBuilder]: naming of `variant` prop

[matthewgallo]

Summary

As @elycheea and myself started working on the complex state accessibility audit we noticed the variant prop for the ConditionBuilder component and are wondering if renaming it to match Carbon's more commonly used type or kind props makes more sense for consistency across the design system.

Relevant information

No response

Name and organization

Our team

Code of Conduct

• [X] I agree to follow this project's Code of Conduct
• [X] I checked the current issues for duplicate issues

### Tasks
- [ ] Update Storybook to use option instead of manually type string

[amal-k-joy]

@elycheea @matthewgallo There is an update as shared by @My-Money29 to rename the variant names as
sentence ==>Non - Hierarchical tree ==> Hierarchical

[amal-k-joy]

@matthewgallo @elycheea Also if we are thinking of changing the prop name variant, feel like type is more close . Just saw these definition online. whats your thoughts? Type: A category or class of things having common characteristics. Kind: A category with a more specific characteristic; often implies a natural grouping or inherent quality. Variant: A form or version of something that differs in some respect from other forms of the same thing or from a standard.