Fix ResizeObserver being used even when height is provided

Author: tnajdek

lib/components/list/List.test.tsx

@@ -685,6 +685,29 @@ describe("List", () => {
 
       render(<Test />);
     });
+
+    test("should not require resizeObserver if height is provided", () => {
+      const originalResizeObserver = window.ResizeObserver;
+      window.ResizeObserver = vi.fn(() => ({
+        observe: vi.fn(),
+        unobserve: vi.fn(),
+        disconnect: vi.fn()
+      }));
+
+      render(
+        <List
+          overscanCount={0}
+          rowCount={100}
+          rowComponent={RowComponent}
+          rowHeight={25}
+          rowProps={EMPTY_OBJECT}
+          style={{ height: 42 }}
+        />
+      );
+
+      expect(window.ResizeObserver).toHaveBeenCalledTimes(0);
+      window.ResizeObserver = originalResizeObserver;
+    });
   });
 
   describe("aria attributes", () => {

lib/components/list/List.tsx

@@ -50,6 +50,7 @@ export function List<
     stopIndexVisible
   } = useVirtualizer({
     containerElement: element,
+    containerStyle: style,
     defaultContainerSize: defaultHeight,
     direction: "vertical",
     itemCount: rowCount,