velocity #set directives don't work when executed by parseContent and a syntax2.0 document has been rendered.

test case:
Create a syntax 1.0 document like this:

<% println(context.getContext().getWiki().parseContent("\#set(\$test = 'Hello World') \$test", context.getContext())); %>

Create a syntax 2.0 document like this:

{{groovy}}println(xcontext.getContext().getWiki().parseContent("#set($test = 'Hello World') $test", xcontext.getContext()));{{/groovy}}

$ and # are escaped in 1.0 version because everything is parsed as velocity before being executed by groovy.
Note the syntax1.0 version works while the syntax 2.0 version doesn't.