Caps Lock is not working properly in Qt Virtual Keyboard.

The Qt virtual keyboard's Caps Lock is not functioning as expected in the following scenario. When the Caps Lock button is double-clicked, the keyboard should lock for uppercase letters. However, this does not occur if the keyboard is already opened with uppercase letters.

Non-working scenario:

1. Open the keyboard; it opens with uppercase letters initially.
2. Double-click on the Caps Lock button.

Expected result: The keyboard should lock with uppercase letters upon double-clicking.

It is observed that three clicks are needed to lock the keyboard with uppercase letters.

If the keyboard is opened with lowercase letters, double-clicking the Caps Lock button locks the keyboard to uppercase as expected. The issue primarily occurs when the keyboard is opened with uppercase letters.

I have attached an example project to reproduce this issue.