[BUG] `UCI.SubGrid.GetSubGridItemsCount(String subgridName)` fails when no records

[tdashworth]

Bug Report

Issues should only be created for items related to covered functionality.

Not covered functionality, feature requests, and questions should use the Feature Request or Question templates.

EasyRepro Version

• [ ] Microsoft Dynamics 365 Online Version 8.2 (8.2.x) (DB 8.2.x) online
• [ ] Microsoft Dynamics 365 Online Version 9.0 (9.0.x) (DB 9.0.x) online
• [ ] Microsoft Dynamics 365 Online Version 9.0.2 (9.0.2) (DB 9.0.2) online
• [ ] Microsoft Dynamics 365 Online Version 9.1 (9.1.x) (DB 9.1.x) online
• [x] 9.2.21101.119-RW2-Preview

UCI or Classic Web

• [x] UCI (XrmApp)
• [ ] Classic Web (XrmBrowser)

Online or On Premise

• [x] Online
• [ ] On Premise

Browser

• [x] Chrome
• [ ] Firefox
• [ ] IE
• [ ] Edge

Describe the bug

Microsoft.Dynamics365.UIAutomation.Api.UCI.SubGrid.GetSubGridItemsCount(String subgridName) fails with the following error when there are no records:

...threw exception:
OpenQA.Selenium.NoSuchElementException: no such element: Unable to locate element: {"method":"xpath","selector":".//div[@class='ag-center-cols-viewport']//div[@role='rowgroup']"}
(Session info: headless chrome=104.0.5112.102)
   at Microsoft.Dynamics365.UIAutomation.Browser.BrowserCommand`1.Execute[T1,T2,T3,T4,T5,T6,T7,T8,T9](IWebDriver driver, T1 p1, T2 p2, T3 p3, T4 p4, T5 p5, T6 p6, T7 p7, T8 p8, T9 p9)
   at Microsoft.Dynamics365.UIAutomation.Browser.BrowserCommand`1.Execute(IWebDriver driver)
   at Microsoft.Dynamics365.UIAutomation.Browser.BrowserPage.Execute[TResult](BrowserCommandOptions options, Func`2 delegate)
   at Microsoft.Dynamics365.UIAutomation.Api.UCI.SubGrid.GetSubGridItemsCount(String subgridName)

Special formatting / display

No

Code to reproduce

xrmApp.OnlineLogin.Login(_xrmUri, _username, _password);

xrmApp.Navigation.OpenApp(UCIAppName.Sales);

xrmApp.Entity.OpenEntity("contact", recordGuid);

xrmApp.Entity.SubGrid.GetSubGridItemsCount("nameOfSubgrid");

Expected behavior

A count of 0 returned.