There should be new issue create dialog screen while creating issues from testing board

Description

When creating an issue via Xray's "Create Test" dialog, the app uses a legacy issue creation method (AP.jira.openCreateIssueDialog) that opens an older version of the create dialog. This older dialog does not handle wiki-style markup the same way, which causes the tags to be stored and displayed as literal text.

Based on feedback from Atlassian, this is expected behaviour as the legacy dialog . The issue will be mitigated once Xray migrates to Forge and adopts the CreateIssueModal, which supports modern rendering and formatting

User friction

• Users are seeing the Text format of colour rather than seeing the exact colour of the Text they are providing the colour to.
• Users see IDs instead of meaningful labels, making the field unusable.

Steps to reproduce (right now) / Actual Result:

• Open Test Repository/ testing board
• Click Create Test
• Observe the issue creation dialog.
• Check the Forge custom field.
• The field doesn't display the value correctly
• In Description field:
  -Apply text colour or formatting
  -Raw markup/hex colour codes are displayed

IMPACT

What would improve if solved:

• Correct rendering of Forge custom fields.
• Align with Atlassian's modern platform
• Correct rendering of rich text formatting

Impact on stakeholders:

• Teams relying on formatted descriptions for readability and reporting will improve

Current workaround:

Creating Test issues via the standard Jira Create dialog — select the "Test" issue type directly from Jira's create button, then add Xray-specific fields after the issue is created. This will use the modern editor and render formatting correctly.
Editing the Description after creation — open the Test issue and edit the Description field from the issue view. When saved from the modern editor, the formatting will be re-processed and rendered correctly.

CONTEXT & EXAMPLES:

Concrete example:

• Case 1 - While creating issues from the Testing Board, adding colour to the Description Text shows Raw markup/hex colour codes.
• Case 2 - When creating a defect from the test execution screen in the Custom field value doesn't display correctly, showing a number instead of a label