Edit data toolbar redesign when window is resized

### Feature Description

When the Edit Data window is resized, the toolbar becomes cluttered.

Proposed solution: Display toolbar options as icon-only when the window is resized to a smaller size, and revert to icon + text when there is sufficient space.

### Problem and Motivation

See above.

### Related Area

- [ ] Connection dialog (SQL Server | Azure browse/Fabric browse)
- [ ] Query editor
- [ ] Query results panel
- [ ] Object Explorer
- [ ] GitHub Copilot integration
- [x] 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 area

_No response_

### Confirmation

- [x] I have searched existing feature requests and couldn't find a match
- [ ] I want to help implement this feature

Start by locating the Preview/Edit data area and its toolbar entry point in the vscode-mssql extension, then inspect how the window resize state is exposed. Verify the toolbar switches to icon-only at a smaller size and returns to icon-plus-text when sufficient space is available.

Written by the indexing model from the issue text.