fix：修复部分数据库查询问题

Tiku.IntegrationTests/Api/DevelopmentTenantDomainLifecycleHostedServiceTests.cs

@@ -0,0 +1,24 @@
+using Tiku.Api.Background;
+
+namespace Tiku.IntegrationTests.Api;
+
+public sealed class DevelopmentTenantDomainLifecycleHostedServiceTests
+{
+    [Theory]
+    [InlineData(0, 2)]
+    [InlineData(1, 2)]
+    [InlineData(2, 4)]
+    [InlineData(3, 8)]
+    [InlineData(8, 256)]
+    [InlineData(9, 300)]
+    [InlineData(100, 300)]
+    public void Idle_polling_backs_off_exponentially_and_is_capped(int idleIterations, int expectedSeconds)
+    {
+        var delay = DevelopmentTenantDomainLifecycleHostedService.CalculateDelay(
+            TimeSpan.FromSeconds(2),
+            TimeSpan.FromSeconds(300),
+            idleIterations);
+
+        Assert.Equal(TimeSpan.FromSeconds(expectedSeconds), delay);
+    }
+}