Fixed: CPSecureTextField size was not calculated correctly in nib2cib.

Previously, the Secure Text Field size was slightly smaller when placed using Interface Builder.

This commit adjusts the size in nib2cib by ensuring CPTextField _adjustNib2CibSize is called on CPSecureTextField.
Merge pull request #2234 from ahankinson/fix-nib2cib-secure-field-size

Fixed: CPSecureTextField size was not calculated correctly in nib2cib.