git_ui: Commit modal refinement (#25484)

Closes #ISSUE

Release Notes:

- N/A *or* Added/Fixed/Improved ...

---------

Co-authored-by: Mikayla Maki <mikayla.c.maki@gmail.com>

crates/panel/src/panel.rs

@@ -49,6 +49,7 @@ pub fn panel_button(label: impl Into<SharedString>) -> ui::Button {
     let id = ElementId::Name(label.clone().to_lowercase().replace(' ', "_").into());
     ui::Button::new(id, label)
         .label_size(ui::LabelSize::Small)
+        .icon_size(ui::IconSize::Small)
         // TODO: Change this once we use on_surface_bg in button_like
         .layer(ui::ElevationIndex::ModalSurface)
         .size(ui::ButtonSize::Compact)