Fix code scanning alert no. 2: Implicit narrowing conversion in compound assignment

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: ArtifactForms

src/main/java/workspace/ui/UiSimpleList.java

@@ -24,7 +24,7 @@ public void addElements(Object... elements) {
 
     @Override
     public void onDraw(Graphics g) {
-        int y = 300;
+        float y = 300;
         int padding = 5;
         int gap = 5;