Add TimeoutTimer arg to TryGetConnection / idleTimeout to DbConnectionPoolGroupOptions in new idle-timeout tests

Main added a TimeoutTimer parameter to ChannelDbConnectionPool.TryGetConnection
and WaitHandleDbConnectionPool.TryGetConnection while this branch was in flight.
The new idle-timeout tests still used the old 3-arg form, causing CS7036 on net9.0.
Also missed one DbConnectionPoolGroupOptions ctor call in ConcurrentCallers test.

Author: priyankatiwari08

src/Microsoft.Data.SqlClient/tests/UnitTests/ConnectionPool/ChannelDbConnectionPoolTest.cs

@@ -1002,6 +1002,7 @@ public void IdleTimeout_StampedOnReturn()
             var pool = ConstructPoolWithIdleTimeout(idleTimeoutSeconds: 3600);
             SqlConnection owningConnection = new();
             pool.TryGetConnection(owningConnection, taskCompletionSource: null,
+                TimeoutTimer.StartNew(TimeSpan.FromSeconds(15)),
                 out DbConnectionInternal? connection);
             Assert.NotNull(connection);
 
@@ -1027,6 +1028,7 @@ public void IdleTimeout_Zero_DoesNotExpire()
             var pool = ConstructPoolWithIdleTimeout(idleTimeoutSeconds: 0);
             SqlConnection owner = new();
             pool.TryGetConnection(owner, taskCompletionSource: null,
+                TimeoutTimer.StartNew(TimeSpan.FromSeconds(15)),
                 out DbConnectionInternal? first);
             Assert.NotNull(first);
 
@@ -1037,6 +1039,7 @@ public void IdleTimeout_Zero_DoesNotExpire()
             // Act
             SqlConnection owner2 = new();
             pool.TryGetConnection(owner2, taskCompletionSource: null,
+                TimeoutTimer.StartNew(TimeSpan.FromSeconds(15)),
                 out DbConnectionInternal? second);
 
             // Assert - same instance, idle expiry disabled
@@ -1054,6 +1057,7 @@ public void IdleTimeout_Set_ExpiresOldConnection()
             var pool = ConstructPoolWithIdleTimeout(idleTimeoutSeconds: 1);
             SqlConnection owner = new();
             pool.TryGetConnection(owner, taskCompletionSource: null,
+                TimeoutTimer.StartNew(TimeSpan.FromSeconds(15)),
                 out DbConnectionInternal? first);
             Assert.NotNull(first);
 
@@ -1064,6 +1068,7 @@ public void IdleTimeout_Set_ExpiresOldConnection()
             // Act - request another connection
             SqlConnection owner2 = new();
             pool.TryGetConnection(owner2, taskCompletionSource: null,
+                TimeoutTimer.StartNew(TimeSpan.FromSeconds(15)),
                 out DbConnectionInternal? second);
 
             // Assert - the expired one is discarded; a new one is minted.
@@ -1082,13 +1087,15 @@ public void IdleTimeout_Set_KeepsFreshConnection()
             var pool = ConstructPoolWithIdleTimeout(idleTimeoutSeconds: 60);
             SqlConnection owner = new();
             pool.TryGetConnection(owner, taskCompletionSource: null,
+                TimeoutTimer.StartNew(TimeSpan.FromSeconds(15)),
                 out DbConnectionInternal? first);
             Assert.NotNull(first);
             pool.ReturnInternalConnection(first, owner);
 
             // Act - immediately request another connection
             SqlConnection owner2 = new();
             pool.TryGetConnection(owner2, taskCompletionSource: null,
+                TimeoutTimer.StartNew(TimeSpan.FromSeconds(15)),
                 out DbConnectionInternal? second);
 
             // Assert - same instance reused, well within idle window
@@ -1323,7 +1330,8 @@ public async Task ConcurrentCallers_ShouldTimeoutIndependently()
                 maxPoolSize: 1,
                 creationTimeout: 15,
                 loadBalanceTimeout: 0,
-                hasTransactionAffinity: true
+                hasTransactionAffinity: true,
+                idleTimeout: 0
             );
             var pool = ConstructPool(SuccessfulConnectionFactory, poolGroupOptions: poolGroupOptions);
 

src/Microsoft.Data.SqlClient/tests/UnitTests/ConnectionPool/WaitHandleDbConnectionPoolIdleTimeoutTest.cs

@@ -61,6 +61,7 @@ private DbConnectionInternal GetConnection(SqlConnection owner)
         _pool.TryGetConnection(
             owner,
             taskCompletionSource: null,
+            TimeoutTimer.StartNew(TimeSpan.FromSeconds(15)),
             out DbConnectionInternal? connection);
         Assert.NotNull(connection);
         return connection!;