A second click "Test connection" displays an error

[oanat]

Steps to reproduce:

• Add valid AD credentials to the configuration section
• click on "Test connection"

* click to "Save" settings * click on "Test connection" again

Result: "Test connection" displays an error

Expected result: "Test connection" displays the same success result as the first test

[acotiuga]

This is caused by an improvement introduced in XWiki 10.7 (xwiki/xwiki-platform@2f2c824) which updates the type of the password field from String to Password so it is replaced by *** when it is saved.