fix MPS-18631: IllegalArgumentException because of getConcept() instead of getInstaceConcept()
MPS-18907 [build:MPS-129.1982] Failed to create cell for node [statement] IfStatement <no ref>[4156540695416287402] in jetbrains.account.ui.audits@13_0: java.lang.NoSuchMethodException: No such method for virtual_isGuardClauseStatement_1237547327995 in jetbrains.mps.xml.structure.ContentList
make (fix diff test)
Merge remote-tracking branch 'origin/MPS3.0'