[Workspace]Add features list to use case card and preselect first one

[wanglam]

Is your feature request related to a problem? Please describe.

Currently, the workspace use case card only displays the use case title, which may not provide enough information for users to understand the purpose and capabilities of each use case. Additionally, no use case is preselected by default, and the use case name input field is left blank too. We can preselect the first one and fill its name to the name input.

Describe the solution you'd like

1. Enhance the Use Case Service

• Pass the feature titles associated with each use case to the workspace use case object in the use case service.
• Add the feature title rendering logic in the workspace use case card
• This will allow the registered features of each use case to be displayed in the workspace use case card, providing users with more information to make an informed decision.

2. Improve the Workspace Creation Flow

• Generate the available use cases on the workspace creation page.
• Automatically select the first available use case as the default option.
• Populate the workspace form with the default use case name and its associated features.

Describe alternatives you've considered

N/A

Additional context

#4944
#6887