Update VS project files to require VS2026 (version 18.0)

Co-authored-by: protikbiswas100 <219775028+protikbiswas100@users.noreply.github.com>

Author: Copilot

change/@react-native-windows-automation-channel-f1f95da9-8b24-4818-b9b6-58839ca4aa69.json

@@ -0,0 +1,7 @@
+{
+  "type": "prerelease",
+  "comment": "Update MinimumVisualStudioVersion to 18.0 for VS2026 support",
+  "packageName": "@react-native-windows/automation-channel",
+  "email": "copilot@github.com",
+  "dependentChangeType": "patch"
+}

change/@react-native-windows-telemetry-3893fb9f-9108-4564-b5a0-bfec87c5c562.json

@@ -0,0 +1,7 @@
+{
+  "type": "prerelease",
+  "comment": "Update MinimumVisualStudioVersion to 18.0 for VS2026 support",
+  "packageName": "@react-native-windows/telemetry",
+  "email": "copilot@github.com",
+  "dependentChangeType": "patch"
+}

packages/@react-native-windows/automation-channel/windows/AutomationChannel.sln

@@ -1,7 +1,7 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Version 17
-VisualStudioVersion = 17.3.32929.385
+# Visual Studio Version 18
+VisualStudioVersion = 18.0.0.0
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "AutomationChannel", "AutomationChannel\AutomationChannel.vcxproj", "{C0A69310-6119-46DC-A6D6-0BAB7826DC92}"
 	ProjectSection(ProjectDependencies) = postProject

packages/@react-native-windows/automation-channel/windows/AutomationChannel/AutomationChannel.vcxproj

@@ -9,7 +9,7 @@
     <ProjectName>AutomationChannel</ProjectName>
     <RootNamespace>AutomationChannel</RootNamespace>
     <DefaultLanguage>en-US</DefaultLanguage>
-    <MinimumVisualStudioVersion>17.0</MinimumVisualStudioVersion>
+    <MinimumVisualStudioVersion>18.0</MinimumVisualStudioVersion>
     <AppContainerApplication>true</AppContainerApplication>
     <ApplicationType>Windows Store</ApplicationType>
     <ApplicationTypeRevision>10.0</ApplicationTypeRevision>

packages/@react-native-windows/telemetry/src/test/projects/UsesPackageReference/UsesPackageReference.csproj

@@ -17,7 +17,7 @@
     <TargetPlatformIdentifier>UAP</TargetPlatformIdentifier>
     <TargetPlatformVersion Condition=" '$(TargetPlatformVersion)' == '' ">10.0.22621.0</TargetPlatformVersion>
     <TargetPlatformMinVersion>10.0.17763.0</TargetPlatformMinVersion>
-    <MinimumVisualStudioVersion>17.0</MinimumVisualStudioVersion>
+    <MinimumVisualStudioVersion>18.0</MinimumVisualStudioVersion>
     <FileAlignment>512</FileAlignment>
     <ProjectTypeGuids>{A5A43C5B-DE2A-4C0C-9213-0A381AF9435A};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
     <WindowsXamlEnableOverview>true</WindowsXamlEnableOverview>

packages/@react-native-windows/telemetry/src/test/projects/UsesPackagesConfig/UsesPackagesConfig.vcxproj

@@ -10,7 +10,7 @@
     <ProjectName>UsesPackagesConfig</ProjectName>
     <RootNamespace>UsesPackagesConfig</RootNamespace>
     <DefaultLanguage>en-US</DefaultLanguage>
-    <MinimumVisualStudioVersion>17.0</MinimumVisualStudioVersion>
+    <MinimumVisualStudioVersion>18.0</MinimumVisualStudioVersion>
     <AppContainerApplication>true</AppContainerApplication>
     <ApplicationType>Windows Store</ApplicationType>
     <ApplicationTypeRevision>10.0</ApplicationTypeRevision>