Population details page doesn't have information about accessions in the population

[titima15]

Expected Behavior

For Bugs:

Environment

Steps to Reproduce

[bellerbrock]

https://github.com/solgenomics/sgn/blob/8a8955f8935977dc237e0303651bc58f5acfe896/mason/stock/index.mas#L288 Could add population to the type_names checked in this line, but showing the contents in a dedicated uncollapsed section would be even better.

[titima15]

Done via #4947