Add missing IAsyncDisposable interfaces to System.Data

Part of #35012

Author: roji

src/System.Data.Common/ref/System.Data.Common.cs

@@ -1796,7 +1796,7 @@ protected DbColumn() { }
         public int? NumericScale { get { throw null; } protected set { } }
         public string UdtAssemblyQualifiedName { get { throw null; } protected set { } }
     }
-    public abstract partial class DbCommand : System.ComponentModel.Component, System.Data.IDbCommand, System.IDisposable
+    public abstract partial class DbCommand : System.ComponentModel.Component, System.Data.IDbCommand, System.IDisposable, System.IAsyncDisposable
     {
         protected DbCommand() { }
         [System.ComponentModel.DefaultValueAttribute("")]
@@ -1893,7 +1893,7 @@ protected void RowUpdatingHandler(System.Data.Common.RowUpdatingEventArgs rowUpd
         protected abstract void SetRowUpdatingHandler(System.Data.Common.DbDataAdapter adapter);
         public virtual string UnquoteIdentifier(string quotedIdentifier) { throw null; }
     }
-    public abstract partial class DbConnection : System.ComponentModel.Component, System.Data.IDbConnection, System.IDisposable
+    public abstract partial class DbConnection : System.ComponentModel.Component, System.Data.IDbConnection, System.IDisposable, System.IAsyncDisposable
     {
         protected DbConnection() { }
         [System.ComponentModel.DefaultValueAttribute("")]
@@ -2050,7 +2050,7 @@ protected virtual void TerminateBatching() { }
         public int Update(System.Data.DataSet dataSet, string srcTable) { throw null; }
         public int Update(System.Data.DataTable dataTable) { throw null; }
     }
-    public abstract partial class DbDataReader : System.MarshalByRefObject, System.Collections.IEnumerable, System.Data.IDataReader, System.Data.IDataRecord, System.IDisposable
+    public abstract partial class DbDataReader : System.MarshalByRefObject, System.Collections.IEnumerable, System.Data.IDataReader, System.Data.IDataRecord, System.IDisposable, System.IAsyncDisposable
     {
         protected DbDataReader() { }
         public abstract int Depth { get; }
@@ -2353,7 +2353,7 @@ public sealed partial class DbProviderSpecificTypePropertyAttribute : System.Att
         public DbProviderSpecificTypePropertyAttribute(bool isProviderSpecificTypeProperty) { }
         public bool IsProviderSpecificTypeProperty { get { throw null; } }
     }
-    public abstract partial class DbTransaction : System.MarshalByRefObject, System.Data.IDbTransaction, System.IDisposable
+    public abstract partial class DbTransaction : System.MarshalByRefObject, System.Data.IDbTransaction, System.IDisposable, System.IAsyncDisposable
     {
         protected DbTransaction() { }
         public System.Data.Common.DbConnection Connection { get { throw null; } }

src/System.Data.Common/src/System/Data/Common/DbCommand.cs

@@ -8,7 +8,7 @@
 
 namespace System.Data.Common
 {
-    public abstract class DbCommand : Component, IDbCommand
+   public abstract class DbCommand : Component, IDbCommand, IAsyncDisposable
     {
         protected DbCommand() : base()
         {

src/System.Data.Common/src/System/Data/Common/DbConnection.cs

@@ -8,7 +8,7 @@
 
 namespace System.Data.Common
 {
-    public abstract class DbConnection : Component, IDbConnection
+    public abstract class DbConnection : Component, IDbConnection, IAsyncDisposable
     {
 #pragma warning disable 649 // ignore unassigned field warning
         internal bool _suppressStateChangeForReconnection;

src/System.Data.Common/src/System/Data/Common/DbDataReader.cs

@@ -10,7 +10,7 @@
 
 namespace System.Data.Common
 {
-    public abstract class DbDataReader : MarshalByRefObject, IDataReader, IEnumerable
+    public abstract class DbDataReader : MarshalByRefObject, IDataReader, IEnumerable, IAsyncDisposable
     {
         protected DbDataReader() : base() { }
 

src/System.Data.Common/src/System/Data/Common/DbTransaction.cs

@@ -7,7 +7,7 @@
 
 namespace System.Data.Common
 {
-    public abstract class DbTransaction : MarshalByRefObject, IDbTransaction
+    public abstract class DbTransaction : MarshalByRefObject, IDbTransaction, IAsyncDisposable
     {
         protected DbTransaction() : base() { }