Find keywords does not support failIfNotFound=True in remote library mode

[sampeson]

In Jython mode failIfNotFound=True works, but in remote mode fails with Find does not fail with expected error message when query not found: This library does not support keyword arguments..

This needs to be fixed so that works logically betwen local and remote usage.

[sampeson]

Workaround is to use ${True} or ${False}in place of last argument.

[sampeson]

Could be fixes as in https://github.com/Hi-Fi/robotframework-seleniumlibrary-java/blob/develop/src/main/java/com/github/markusbernhardt/seleniumlibrary/keywords/BrowserManagement.java#L194