Fix kotlin cache lazy loading

Fix kotlin cache lazy loading

When USE_SCRIPT_COMPILATION_CACHE is set to false the classLoader
is closed after the class is instantiated. This is causing an issue
when lazy loading is happening during the script execution.

Lazy loading occurs when a suspendible function returning something
is called from "processNB", kotlin will create a second class that
will be loaded during execution (needs to be in the classpath during execution).

Issue-ID: CCSDK-2150

Signed-off-by: Sebastien Premont-Tendland <sebastien.premont@bell.ca>
Change-Id: I64780287352d762325662e0e5d5b94038dedee7f