fix MPS-21127 Different behavior of concept/property/link rename by shortcut or inline
LanguageDescriptorPersistence: can save descriptor to any stream, this is for fixing [MPS-21143 Make language by ctrl+f9 doesn't load classes to start migration]: we get hash from a file, but generate code from the descriptor; they can be not in sync
finally fix MPS-21143 Make language by ctrl+f9 doesn't load classes to start migration
fix MPS-20977 Move link refactoring doesn't work