changing location of automationheadinglevel.cs to fix api compat errors

Author: Felipe da Conceicao Guimaraes

src/Microsoft.DotNet.Wpf/ApiCompat/Baselines/UIAutomationClient-ref.baseline.txt

@@ -1,3 +1 @@
-Compat issues with assembly UIAutomationClient:
-TypesMustExist : Type 'System.Windows.Automation.AutomationHeadingLevel' does not exist in the implementation but it does exist in the contract.
-Total Issues: 1
+Total Issues: 0

src/Microsoft.DotNet.Wpf/ApiCompat/Baselines/UIAutomationTypes-ref.baseline.txt

@@ -1 +1,3 @@
-Total Issues: 0
+Compat issues with assembly UIAutomationTypes:
+TypesMustExist : Type 'System.Windows.Automation.AutomationHeadingLevel' does not exist in the implementation but it does exist in the contract.
+Total Issues: 1

src/Microsoft.DotNet.Wpf/src/PresentationCore/PresentationCore.csproj

@@ -392,7 +392,6 @@
     <Compile Include="System\Windows\UIElement3D.cs" />
     <Compile Include="System\Windows\UIPropertyMetadata.cs" />
     <Compile Include="System\Windows\Automation\AutomationLiveSetting.cs" />
-    <Compile Include="System\Windows\Automation\AutomationHeadingLevel.cs" />
     <Compile Include="System\Windows\Automation\AutomationProperties.cs" />
     <Compile Include="System\Windows\Automation\IsOffscreenBehavior.cs" />
     <Compile Include="System\Windows\Automation\Peers\AutomationPeer.cs" />

src/Microsoft.DotNet.Wpf/src/PresentationCore/System/Windows/Automation/AutomationHeadingLevel.cs

@@ -61,7 +61,6 @@
     <Compile Include="System\Windows\Automation\AutomationElement.cs" />
     <Compile Include="System\Windows\Automation\AutomationElementCollection.cs" />
     <Compile Include="System\Windows\Automation\AutomationFocusChangedEventArgs.cs" />
-    <Compile Include="System\Windows\Automation\AutomationHeadingLevel.cs" />
     <Compile Include="System\Windows\Automation\BasePattern.cs" />
     <Compile Include="System\Windows\Automation\CacheRequest.cs" />
     <Compile Include="System\Windows\Automation\ClientSettings.cs" />

src/Microsoft.DotNet.Wpf/src/UIAutomation/UIAutomationClient/UIAutomationClient.csproj

@@ -35,6 +35,7 @@
     <Compile Include="System\Windows\Automation\AutomationElementIdentifiers.cs" />
     <Compile Include="System\Windows\Automation\AutomationEvent.cs" />
     <Compile Include="System\Windows\Automation\AutomationEventArgs.cs" />
+    <Compile Include="System\Windows\Automation\AutomationHeadingLevel.cs" />
     <Compile Include="System\Windows\Automation\AutomationIdentifier.cs" />
     <Compile Include="System\Windows\Automation\AutomationPattern.cs" />
     <Compile Include="System\Windows\Automation\AutomationProperty.cs" />