render/outline: Handler inner/outer radius properly and ceil thickness

src/shell/element/stack.rs

@@ -782,6 +782,7 @@ impl CosmicStack {
                     1,
                     radii.unwrap_or([0, 0, 0, 0]),
                     a * alpha,
+                    scale.x,
                     [r, g, b],
                 ))
             });

src/shell/element/window.rs

@@ -503,6 +503,7 @@ impl CosmicWindow {
                 1,
                 radii,
                 a * alpha,
+                scale.x,
                 [r, g, b],
             ));
             elements.push(elem);