Add recipe for jr:choice-name outside of repeat for value inside repeat

This is most common in parallel repeats or to build dynamic selects off of repeats.

Starting with pyxform 2.0.0, an additional select without any filter needs to exist outside of any repeat. https://github.com/getodk/javarosa/issues/741

Search the Sphinx documentation for existing recipes involving jr:choice-name, repeats, and filtered selects. Add a recipe covering a value inside a repeat and the required unfiltered select outside the repeat, then verify that it explains the parallel-repeat and dynamic-select use cases and links to the JavaRosa issue.

Written by the indexing model from the issue text.