editor: Represent scroll offset with more precision (#39367)

Closes #5355

Release Notes:

- Fixed rendering glitches with files with more than 16 million lines
(that occured due to floating number rounding errors).

---------

Co-authored-by: Smit Barmase <heysmitbarmase@gmail.com>

crates/ui/src/components/keybinding_hint.rs

@@ -249,7 +249,7 @@ impl RenderOnce for KeybindingHint {
                         blur_radius: px(0.),
                         spread_radius: px(0.),
                     }])
-                    .child(self.keybinding.size(rems_from_px(kb_size.0))),
+                    .child(self.keybinding.size(rems_from_px(kb_size))),
             )
             .children(self.suffix)
     }

crates/ui/src/components/list/list_bullet_item.rs

@@ -16,7 +16,7 @@ impl ListBulletItem {
 
 impl RenderOnce for ListBulletItem {
     fn render(self, window: &mut Window, _cx: &mut App) -> impl IntoElement {
-        let line_height = 0.85 * window.line_height();
+        let line_height = window.line_height() * 0.85;
 
         ListItem::new("list-item")
             .selectable(false)