Add some fixes for migration

Author: MIVerTFT

src/EfCore.Ydb/src/Migrations/Internal/YdbHistoryRepository.cs

@@ -180,7 +180,7 @@ private IReadOnlyList<MigrationCommand> SelectHistoryTableCommand() =>
             new SqlOperation
             {
                 Sql = $"SELECT * FROM {SqlGenerationHelper.DelimitIdentifier(TableName, TableSchema)}" +
-                      $" WHERE MigrationId = '{LockKey}';"
+                      $" WHERE '{MigrationIdColumnName}' = '{LockKey}';"
             }
         });
 

src/EfCore.Ydb/src/Migrations/YdbMigrationsSqlGenerator.cs

@@ -357,6 +357,12 @@ protected override void Generate(
         // Ignore bc YDB doesn't have foreign keys
     }
 
+    protected override void Generate(EnsureSchemaOperation operation, IModel? model,
+        MigrationCommandListBuilder builder)
+    {
+        // Ignore bc YDB doesn't support schema
+    }
+    
     protected override void Generate(
         AddPrimaryKeyOperation operation,
         IModel? model,
@@ -400,4 +406,6 @@ private void EndStatementSuppressTransaction(MigrationCommandListBuilder builder
 
     private string DelimitIdentifier(string name, string? schema = null)
         => Dependencies.SqlGenerationHelper.DelimitIdentifier(name, schema);
+
+    
 }