MPS-19228 A lot of "using of IllegalConceptDescriptor" warnings when generating from build script:
do not go into TF - there can't be any nested TF, and since macros and queries are (grand-*)children of TF's node, they won't get asked about their concept.
Merge branch 'MPS3.0'

Conflicts:
	core/generator/solutions/generator/models/impl.mps
	core/generator/source_gen/jetbrains/mps/generator/impl/GeneratorUtilEx.java