[Bug]: Dropdown shouldn't open with Up arrow key press

[Kritvi-bhatia17]

Package

@carbon/react

Browser

No response

Package version

v1.72.0

React version

v18.2.0

Description

The closed default & fluid dropdown input should not open when the user presses the Up arrow key, as unlike the combobox, there is no ability to wrap around the options list (i.e., pressing the Up arrow at the top of the open list does nothing).
For more details, refer to this comment.

Reproduction/example

https://react.carbondesignsystem.com/?path=/story/components-dropdown--playground

Steps to reproduce

Suggested Severity

Severity 3 = User can complete task, and/or has a workaround within the user experience of a given component.

Application/PAL

No response

Code of Conduct

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