MPS-18709 Textgen generator works incorrectly if language structure was not generated
MPS-18709 Textgen generator works incorrectly if language structure was not generated: regenerate textgens
Merge remote-tracking branch 'origin/MPS3.0'

Conflicts:
	languages/util/uiLanguage/source_gen.caches/jetbrains/mps/uiLanguage/textGen/dependencies
	languages/util/uiLanguage/source_gen.caches/jetbrains/mps/uiLanguage/textGen/generated
	languages/util/uiLanguage/source_gen/jetbrains/mps/uiLanguage/textGen/PngIcon_TextGen.java
	languages/util/uiLanguage/source_gen/jetbrains/mps/uiLanguage/textGen/trace.info