[Spark] No invisible chars check for Spark Run Configuration arguments

[wezhang]

Some unseen whitespace/invisible chars in Spark Job Run configuration arguments input fields would cause the job submission error. We can leverage Java function Character.isWhitespace(char) or org.apache.commons.lang3.StringUtils.containsWhitespace(s) to check them.

[jingyanjingyan]

Fix in develop 839, pops warning for invisible char