Fix document suggestion widget when specifying Nxql query

SELECT * FROM Document WHERE dc:title ILIKE '%?%'

****** chain ******
Name: WebUI.RunOperationInSeam
Aliases: [Seam.RunOperation]
Exception: TraceException
Caught error: 

****** chain ******
Name: operation
Exception: OperationException
Caught error: Failed to execute query: SELECT * FROM Document WHERE dc:title ILIKE '%'lan'%', Syntax error: Invalid token <lan> at offset 47
Caused by: null
****** Hierarchy calls ******
	org.nuxeo.ecm.automation.core.operations.services.DocumentPageProviderOperation

Caused by: org.nuxeo.ecm.automation.OperationException: Failed to execute query: SELECT * FROM Document WHERE dc:title ILIKE '%'lan'%', Syntax error: Invalid token <lan> at offset 47
****** Hierarchy calls ******
	org.nuxeo.ecm.automation.seam.operations.RunOperationInSeam

	at org.nuxeo.ecm.automation.core.impl.OperationServiceImpl.run(OperationServiceImpl.java:232)
	at org.nuxeo.ecm.automation.core.impl.OperationServiceImpl.run(OperationServiceImpl.java:115)
	at org.nuxeo.ecm.automation.server.jaxrs.OperationResource.execute(OperationResource.java:51)
	at org.nuxeo.ecm.automation.server.jaxrs.ExecutableResource.doPost(ExecutableResource.java:61)
	... 86 more
Caused by: org.nuxeo.ecm.automation.TraceException: 

****** chain ******
Name: operation
Exception: OperationException
Caught error: Failed to execute query: SELECT * FROM Document WHERE dc:title ILIKE '%'lan'%', Syntax error: Invalid token <lan> at offset 47
Caused by: null
****** Hierarchy calls ******
	org.nuxeo.ecm.automation.core.operations.services.DocumentPageProviderOperation

	at org.nuxeo.ecm.automation.core.impl.OperationServiceImpl.run(OperationServiceImpl.java:232)
	at org.nuxeo.ecm.automation.core.impl.OperationServiceImpl.run(OperationServiceImpl.java:104)
	at org.nuxeo.ecm.automation.seam.operations.RunOperationInSeam.runChain(RunOperationInSeam.java:86)
	at org.nuxeo.ecm.automation.seam.operations.RunOperationInSeam.run(RunOperationInSeam.java:70)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at org.nuxeo.ecm.automation.core.impl.InvokableMethod.doInvoke(InvokableMethod.java:157)
	at org.nuxeo.ecm.automation.core.impl.InvokableMethod.invoke(InvokableMethod.java:170)
	at org.nuxeo.ecm.automation.core.impl.CompiledChainImpl.doInvoke(CompiledChainImpl.java:128)
	at org.nuxeo.ecm.automation.core.impl.CompiledChainImpl.invoke(CompiledChainImpl.java:114)
	at org.nuxeo.ecm.automation.core.impl.OperationServiceImpl.run(OperationServiceImpl.java:208)
	... 89 more
Caused by: org.nuxeo.ecm.automation.OperationException: Failed to execute query: SELECT * FROM Document WHERE dc:title ILIKE '%'lan'%', Syntax error: Invalid token <lan> at offset 47
	at org.nuxeo.ecm.automation.core.operations.services.DocumentPageProviderOperation.run(DocumentPageProviderOperation.java:255)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at org.nuxeo.ecm.automation.core.impl.InvokableMethod.doInvoke(InvokableMethod.java:157)
	at org.nuxeo.ecm.automation.core.impl.InvokableMethod.invoke(InvokableMethod.java:170)
	at org.nuxeo.ecm.automation.core.impl.CompiledChainImpl.doInvoke(CompiledChainImpl.java:128)
	at org.nuxeo.ecm.automation.core.impl.CompiledChainImpl.invoke(CompiledChainImpl.java:114)
	at org.nuxeo.ecm.automation.core.impl.OperationServiceImpl.run(OperationServiceImpl.java:208)
	... 101 more