Fix rects view for WM trace

The rounded corners property should be 0 on WM traces, instead of null

Fixes: 264024995
Test: open a wm trace and check rects view
Change-Id: I53e6668a8bdaa460e2e740936b719a3a4f813f8c

tools/winscope-ng/src/viewers/viewer_window_manager/presenter.ts

@@ -113,6 +113,7 @@ export class Presenter {
         rect.stableId = display.stableId;
         rect.displayId = display.id;
         rect.isDisplay = true;
+        rect.cornerRadius = 0;
         rect.isVirtual = false;
         return rect;
       }) ?? [];
@@ -124,6 +125,7 @@ export class Presenter {
           const rect = it.rect;
           rect.id = it.layerId;
           rect.displayId = it.displayId;
+          rect.cornerRadius = 0;
           if (!this.displayIds.includes(it.displayId)) {
             this.displayIds.push(it.displayId);
           }