Fix error when copying to system config (#9449)
* Fix error when copying to system config
Dont copy folders that previously allowed unpackaged addons to be run.
These folders ('appModules','brailleDisplayDrivers','globalPlugins',
'synthDrivers') are now only used if they are within the scratchpad
directory and the advanced option is turned on.
See commit: d1a8a710d37f5a376ebf9f32600d7cb857554b38
Since we are not copying these folders, and the contents would not be run
even if they were copied, we no longer warn about them.
A log message is added if they are present and we skip over them.
* Mutate subDirs to exclude unwanted files.
Address review feedback in #9449
* Update what's new.
