Change `Connection Name` Input Field to `Username` in JDBC Connection Dialog

[sumedhe]

Description

In the JDBC connection creation dialog, the input field is currently labeled Connection Name, but it is being used to capture the username, which is misleading. JDBC connections typically require a Username field for authentication, and labeling it otherwise can create confusion.

Steps to Reproduce

1. Go to the Console.
2. Navigate to the User Attributes & Stores tab and select Userstores.
3. Click on New Userstore and select Database.
4. A dialog box will appear with an input field labeled Connection Name, which is intended to capture the username.

Please select the area issue is related to

User & Identity Administration

Version

7.2.0-M5

Environment Details (with versions)

No response

Developer Checklist

• [Behavioural Change] Does this change introduce a behavioral change to the product?
•  ↳ Approved by team lead
•  ↳ Label impact/behavioral-change added
• [Migration Impact] Does this change have a migration impact?
•  ↳ Migration label added (e.g., 7.2.0-migration)
•  ↳ Migration issues created and linked
• [New Configuration] Does this change introduce a new configuration?
•  ↳ Label config added
•  ↳ Configuration is properly documented