Modified `<DxPopup>` properties to prevent closing via Escape, outside clicks, or the close button. Updated the "Schliessen" button to always be enabled, regardless of `_capturedSignature` state.
Modified `<DxPopup>` properties to prevent closing via Escape, outside clicks, or the close button. Updated the "Schliessen" button to always be enabled, regardless of `_capturedSignature` state.