Template not found for name [/visualization_javascript] and path [/_visualization_javascript.gsp (Grails 3.0.9)]

Hi,

plugin version: 2.0

steps to reproduce:
create a new grails (3.0.9) project
create a new controller
create index.gsp

copy example from wiki:

```

<%
def myDailyActivitiesColumns = [['string', 'Task'], ['number', 'Hours per Day']]
def myDailyActivitiesData = [['Work', 11], ['Eat', 2], ['Commute', 2], ['Watch TV', 2], ['Sleep', 7]]
%>

```

opening the page localhost:8080/test/index causes the error "Template not found for name [/visualization_javascript] and path [/_visualization_javascript.gsp"


Reproduce the failure in a Grails 3.0.9 project using the example from the issue and opening /test/index. Start with index.gsp and the missing _visualization_javascript.gsp template path; compare the plugin's template resolution with the failing tag usage. Done means the example page renders without the template-not-found error.

Written by the indexing model from the issue text.