[Task]: Remove "Preview" label from GA features - v1.43

[croblesm]

Description

Remove "Preview" label (now GA) from UI in case missing:

• SQL Notebooks (DONE)
• Schema Designer integration with GitHub Copilot
• DAB / integration with GitHub Copilot

Steps to Reproduce

1. Check OE
2. Check dialogs

Affected Area

• Connection dialog (SQL Server | Azure browse/Fabric browse)
• Query editor
• Query results panel
• Object Explorer
• GitHub Copilot integration
• Preview/Edit data
• Table Designer
• Schema Designer
• Schema Compare
• Local SQL Server Container provisioning
• SQL database in Fabric provisioning
• DACPAC/BACPAC export/import
• SQL Database projects
• Query Plan Visualizer
• Other (please describe below)

If you selected "Other", please describe the affected area

N/A

Environment Information

• Latest

Confirmation

• I have searched existing issues and couldn't find a match
• I want to work on this issue

[lewis-sanchez]

The preview labels for SQL Notebooks was removed in this PR: #22066