@W-16255012 Fix added for combobox on enter key pressed

[aarthim1111]

Fix added for combobox on enter key pressed same as down key pressed

[salesforce-cla]

Thanks for the contribution! It looks like @aarthim1111 is an internal user so signing the CLA is not required. However, we need to confirm this.

[aarthim1111]

@ryojiosawa I'm unable to add reviewers here .Can you please review this code ?
This is a change is combobox.jsx where when enter key is pressed, the dialog should be opened and closed .
No other functionality changes.

[interactivellama]

@aarthim1111 Please see if you can sign the CLA

[aarthim1111]

@interactivellama I have signed the CLA today

[welcome]

Congrats on merging your first pull request to Design System React! 🎉
If you have a moment, please fill out this five question survey, we would appreciate it.
On behalf of Salesforce's customers, partners, product specialists and employees, we would like offer sincere thanks and appreciation for helping make our user experience better. We look forward to working with you more in the future.
This definitely calls for a high five!