Fix master test reds: BBO loss return, ensemble solve API, FlexiChains chain access#299

ChrisRackauckas-Claude wants to merge 5 commits into

SciML:mainSciML/EasyModelAnalysis.jl:mainfrom

ChrisRackauckas-Claude:fix-ensemble-datafit-master-redsChrisRackauckas-Claude/EasyModelAnalysis.jl:fix-ensemble-datafit-master-redsCopy head branch name to clipboard