Show optional X/Y/Z distances in measurement overlays (#1422)

Measure can show the world-axis components alongside the total distance, with a Graphics preference to turn them off.

Co-authored-by: cronos <19868002+crono2250@users.noreply.github.com>
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

crates/ui-egui/src/lib.rs

@@ -63,6 +63,8 @@ pub mod issue_report;
 pub mod keymap;
 mod material_card_review;
 #[cfg(test)]
+mod measurement_ui_tests;
+#[cfg(test)]
 mod menu_tests;
 #[cfg(test)]
 mod surface_clamp_tests;