MappingDetails is empty when opened from MappingBrowser

[nichtich]

Example: https://coli-conc.gbv.de/cocoda/app/?fromScheme=http%3A%2F%2Fbartoc.org%2Fen%2Fnode%2F1707&toScheme=http%3A%2F%2Fbartoc.org%2Fen%2Fnode%2F18785&mappingUri=https%3A%2F%2Fcoli-conc.gbv.de%2Fapi%2Fmappings%2Fba70dc49-6a54-4d00-9c73-69a15d97548e

Maybe think this is caused because the mapping data is loaded asynchronously and not available yet when the MappingDetails modal is opened. In 1.12.1 we made empty fields in MappingDetails to be hidden but they can later become non-empty.

[rodolv-commons]

@nichtich solved, we have from dev