[UI tests] Add basic UI Tests for Text Extractor (#40769)

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fix/what does it change/how was it tested (even manually, if necessary)?
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## Summary of the Pull Request
Text Extractor can be opened on all machines.
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## PR Checklist

- [ ] **Closes:** #40672 
- [ ] **Communication:** I've discussed this with core contributors
already. If the work hasn't been agreed, this work might be rejected
- [ ] **Tests:** Added/updated and all pass
- [ ] **Localization:** All end-user-facing strings can be localized
- [ ] **Dev docs:** Added/updated
- [ ] **New binaries:** Added on the required places
- [ ] [JSON for
signing](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ESRPSigning_core.json)
for new binaries
- [ ] [WXS for
installer](https://github.com/microsoft/PowerToys/blob/main/installer/PowerToysSetup/Product.wxs)
for new binaries and localization folder
- [ ] [YML for CI
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ci/templates/build-powertoys-steps.yml)
for new test projects
- [ ] [YML for signed
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/release.yml)
- [ ] **Documentation updated:** If checked, please file a pull request
on [our docs
repo](https://github.com/MicrosoftDocs/windows-uwp/tree/docs/hub/powertoys)
and link it here: #xxx

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or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments

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wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed

src/modules/PowerOCR/PowerOCR-UITests/PowerOCR-UITests.csproj

@@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <Import Project="..\..\..\Common.Dotnet.CsWinRT.props" />
+  <PropertyGroup>
+    <RootNamespace>PowerOCR.UITests</RootNamespace>
+	<ImplicitUsings>enable</ImplicitUsings>
+	<Nullable>enable</Nullable>
+	<OutputType>Library</OutputType>
+	<RunVSTest>false</RunVSTest>
+  </PropertyGroup>
+
+  <PropertyGroup>
+	<OutputPath>..\..\..\..\$(Platform)\$(Configuration)\tests\PowerOCR.UITests\</OutputPath>
+  </PropertyGroup>
+	
+  <ItemGroup>
+    <PackageReference Include="MSTest" />
+	<ProjectReference Include="..\..\..\common\UITestAutomation\UITestAutomation.csproj" />
+  </ItemGroup>
+</Project>

src/modules/PowerOCR/PowerOCR-UITests/PowerOCRTests.cs

@@ -0,0 +1,59 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using Microsoft.PowerToys.UITest;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using static Microsoft.PowerToys.UITest.UITestBase;
+
+namespace PowerOCR.UITests;
+
+[TestClass]
+public class PowerOCRTests : UITestBase
+{
+    public PowerOCRTests()
+        : base(PowerToysModule.PowerToysSettings, WindowSize.Medium)
+    {
+    }
+
+    [TestInitialize]
+    public void TestInitialize()
+    {
+        if (FindAll<NavigationViewItem>("Text Extractor").Count == 0)
+        {
+            // Expand Advanced list-group if needed
+            Find<NavigationViewItem>("System Tools").Click();
+        }
+
+        Find<NavigationViewItem>("Text Extractor").Click();
+
+        Find<ToggleSwitch>("Enable Text Extractor").Toggle(true);
+
+        SendKeys(Key.Win, Key.D);
+    }
+
+    [TestMethod("PowerOCR.DetectTextExtractor")]
+    [TestCategory("PowerOCR Detection")]
+    public void DetectTextExtractorTest()
+    {
+        try
+        {
+            SendKeys(Key.Win, Key.Shift, Key.T);
+
+            Thread.Sleep(5000);
+
+            var textExtractorWindow = Find("TextExtractor", 10000, true);
+
+            Assert.IsNotNull(textExtractorWindow, "TextExtractor window should be found after hotkey activation");
+
+            Console.WriteLine("✓ TextExtractor window detected successfully after hotkey activation");
+
+            SendKeys(Key.Esc);
+        }
+        catch (Exception ex)
+        {
+            Console.WriteLine($"Failed to detect TextExtractor window: {ex.Message}");
+            Assert.Fail("TextExtractor window was not found after hotkey activation");
+        }
+    }
+}