fix(seg): prevent viewport orientation change when loading SEG in manual grid layout (#6021)

tests/pages/MainToolbarPageObject.ts

@@ -30,6 +30,16 @@ export class MainToolbarPageObject {
 
     return {
       ...layoutSelection,
+      grid(cols: number, rows: number) {
+        const button = page.getByTestId(`Layout-${cols - 1}-${rows - 1}`);
+        return {
+          button,
+          async click() {
+            await layoutSelection.click();
+            await button.click();
+          },
+        };
+      },
       get axialPrimary() {
         const button = page.getByTestId('Axial Primary');
         return {