Fix quoting (post-fix from #36271). (#36302)

Author: cincuranet

test/EFCore.SqlServer.FunctionalTests/Migrations/MigrationsSqlServerTest.cs

@@ -247,7 +247,7 @@ IF NOT EXISTS (
 
         IF @fg_name IS NULL
             BEGIN
-            SET @fg_name = @db_name + N'_MODFG';
+            SET @fg_name = QUOTENAME(@db_name + N'_MODFG');
             EXEC(N'ALTER DATABASE CURRENT ADD FILEGROUP ' + @fg_name + ' CONTAINS MEMORY_OPTIMIZED_DATA;');
             END
 
@@ -313,7 +313,7 @@ IF NOT EXISTS (
 
         IF @fg_name IS NULL
             BEGIN
-            SET @fg_name = @db_name + N'_MODFG';
+            SET @fg_name = QUOTENAME(@db_name + N'_MODFG');
             EXEC(N'ALTER DATABASE CURRENT ADD FILEGROUP ' + @fg_name + ' CONTAINS MEMORY_OPTIMIZED_DATA;');
             END