Color picker: fix duplicate command on Enter key

Insert table -> Miscellaneous -> Color picker to select color using keyboard (enter) then erlier was default color would override to default color and now it would work normal.

Signed-off-by: codewithvk <vivek.javiya@collabora.com>
Change-Id: I6b4be87cc4070ef281829c9e999544c7bce982fd

Author: codewithvk

browser/src/control/jsdialog/Widget.ColorPicker.ts

@@ -168,6 +168,7 @@ function createColor(
 	});
 	color.addEventListener('keydown', (event: KeyboardEvent) => {
 		if (event.code === 'Enter') {
+			event.preventDefault();
 			handleColorSelection(
 				event.target as HTMLElement, // The clicked element
 				builder, // Pass the builder object