Merge pull request #59004 from LucianoPAlmeida/pound-diag

[DeclCollector] Handle pound diagnostic decl in addMembersToRoot

Author: LucianoPAlmeida

lib/APIDigester/ModuleAnalyzerNodes.cpp

@@ -1834,6 +1834,8 @@ SwiftDeclCollector::addMembersToRoot(SDKNode *Root, IterableDeclContext *Context
       // All containing variables should have been handled.
     } else if (isa<IfConfigDecl>(Member)) {
       // All containing members should have been handled.
+    } else if (isa<PoundDiagnosticDecl>(Member)) {
+      // All containing members should have been handled.
     } else if (isa<DestructorDecl>(Member)) {
       // deinit has no impact.
     } else if (isa<MissingMemberDecl>(Member)) {