Merge pull request #67761 from tshortli/ast-unavailable-decl-queries

NFC: Hoist queries for unavailable decl optimizations into the AST library

lib/SILGen/SILGenFunction.cpp

@@ -1017,7 +1017,7 @@ void SILGenFunction::emitFunction(FuncDecl *fd) {
     prepareEpilog(fd->getResultInterfaceType(),
                   fd->hasThrows(), CleanupLocation(fd));
 
-    if (shouldLowerToUnavailableCodeStub(fd))
+    if (fd->requiresUnavailableDeclABICompatibilityStubs())
       emitApplyOfUnavailableCodeReached();
 
     emitProfilerIncrement(fd->getTypecheckedBody());