Deactivate optimistic types to speedup nashorn script compilation

http-nio-0.0.0.0-8080-exec-63" #911 daemon prio=5 os_prio=0 cpu=707203.15ms elapsed=19702.04s tid=0x00007fbc7c027800 nid=0x788d in Object.wait()  [0x00007fbae69e5000]
   java.lang.Thread.State: WAITING (on object monitor)
	at java.lang.Object.wait(java.base@11.0.20/Native Method)
	- waiting on <no object reference available>
	at java.lang.Object.wait(java.base@11.0.20/Object.java:328)
	at jdk.nashorn.internal.runtime.CompiledFunction.getValidOptimisticInvocation(jdk.scripting.nashorn@11.0.20/CompiledFunction.java:635)
	- waiting to re-lock in wait() <0x000000044d6962c0> (a jdk.nashorn.internal.runtime.CompiledFunction)
	at jdk.nashorn.internal.runtime.CompiledFunction.createFunctionInvocation(jdk.scripting.nashorn@11.0.20/CompiledFunction.java:677)
	at jdk.nashorn.internal.runtime.ScriptFunction.findCallMethod(jdk.scripting.nashorn@11.0.20/ScriptFunction.java:949)
	at jdk.nashorn.internal.runtime.ScriptObject.lookup(jdk.scripting.nashorn@11.0.20/ScriptObject.java:1880)
	at jdk.nashorn.internal.runtime.linker.NashornLinker.getGuardedInvocation(jdk.scripting.nashorn@11.0.20/NashornLinker.java:104)
	at 

+++ b/nuxeo-features/nuxeo-automation/nuxeo-automation-scripting/src/main/java/org/nuxeo/automation/scripting/internals/AutomationScriptingServiceImpl.java
@@ -176,7 +176,7 @@ public class AutomationScriptingServiceImpl implements AutomationScriptingServic
     protected ScriptEngine getScriptEngine(boolean cache, boolean filter) {
         NashornScriptEngineFactory nashorn = new NashornScriptEngineFactory();
         String[] args = cache
-                ? new String[] { "-strict", "--optimistic-types=true", "--persistent-code-cache",
+                ? new String[] { "-strict", "--optimistic-types=false", "--persistent-code-cache",
                         "--class-cache-size=50" }
                 : new String[] { "-strict" };