Make text annotation cursor scale with viewer zoom level

When using the Text annotation tool, the viewer correctly shows a text cursor when adding text. However, when zooming in or out of the viewer, the cursor remains the same size, which makes it: - Too small when zoomed in - Too large and obstructive when zoomed out 🎯 Expected Behavior: - The text cursor should scale proportionally with the viewer zoom level, just like the text being typed. - This ensures consistent usability regardless of zoom. - Mimics behavior in tools like Photoshop, Nuke, and others where annotation tools adapt to zoom. 🧪 How to Reproduce: - Activate the Text annotation tool. - Start typing in the viewer. - Zoom in or out using the mouse scroll. - Observe that the text cursor does not change size.