atto_image: Dialogue is not resized after the accessibility warning is displayed

Test 1 Attempt to add an image to Atto Leave the alt text and decorative inputs empty Click insert image Note the warning appears Fill the alt text input Note the warning disappears Empty the alt text input Note the warning appears Fill the alt text input Click Insert image Should work Test 2 Attempt to add an image to Atto Leave the alt text and decorative inputs empty Click insert image Note the warning appears Tick the decorative only box Note the warning disappears Untick the decorative only box Note the warning appears Tick the decorative only box Click Insert image Should work In both tests the dialog should recenter vertically in the window with each appearance/disappearance of the warning.