RendererEncapsulator: use of filter method for rendererVariables is inefficient

Doing some testing using FusionReactor shows that the RendererEncapsulator.cfm has an inefficiency around how it merges the renderVariables struct into the variables scope for the module include.

It currently does:

Whether it is the inline variables.append call, or the `.filter( closure )` call I'm not sure, but simplifying this to the following saved > ~75% of the memory footprint of this logic in Lucee:

Looking at it, I think the exclusion of these variables is not strictly necessary here - but I could be wrong.