reduce braille.BrailleHandler.update redundant executions (#16550)
closes #16456
Summary of the issue:
There are often two BrailleHandler.update executions which produce duplicate log entries when log level is debug. As an example, when navigating with up/down arrows in notepad debug level log shows this.
There should not be good reason for two executions.
Description of user facing changes
Less duplicate "Braille window dots" log lines on debug level. This should facilitate debugging a little.
Description of development approach
removed updateDisplay call from BrailleBuffer.scrollTo
