feat(FTM): New Toolbar - Implement Preview Button and Preview Toolbar

[rjvelazco]

This pull request includes several updates to the DotEmaShellComponent and DotUveToolbarComponent to improve their functionality and styling. The most important changes include modifying location handling methods, updating button styles, and restructuring the toolbar component.

Changes to DotEmaShellComponent:

• Replaced replaceState with go in the #updateLocation method to improve URL handling.
• Updated test cases to use location.go instead of location.replaceState for consistency. [1] [2] [3]

Changes to DotUveToolbarComponent:

• Added new styles for the toolbar and its components, including buttons and chips, to enhance the user interface.
• Refactored the toolbar component template to include separate templates for edit and preview modes and added new buttons and functionality for better user experience. [1]R1, [2]
• Updated test cases to reflect the new structure and functionality of the toolbar component, ensuring proper testing of the new features. [1] [2] [3] [4] [5]

Other Changes:

• Added a new severity style for text buttons in _splitbutton.scss to standardize button appearance.
• Updated button styles in dot-ema-bookmarks.component.html to include a smaller size class for better visual consistency.

Video

issue-30739-ftm-new-toolbar-implement-preview-button-and-preview-toolbar.mov

This PR fixes: #30739