Sync changes from PlasmaExtras PasswordField to disable Ctrl-Z
Disable the Ctrl-Z action in the PasswordField component for security reasons. Also fix the (left and right) padding of the ActionTextField when there is no action added to the left or right side of the TextField.
Related merge request in Plasma Frameworks: frameworks/plasma-framework!542
This MR fixes also a padding issue that was also fixed in frameworks/plasma-framework!542.
In the picture, the left padding was off and does not match the other text fields.