Add Accessible Label To Directory Search Field (#2447)

* Add Accessible Label To Directory Search Field

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

* Align Directory Field Accessible Name

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

* Preserve directory automation name

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 41660996-15c9-4feb-904d-eff836f5f59e

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Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 41660996-15c9-4feb-904d-eff836f5f59e

Author: brianrob

src/PerfView/MainWindow.xaml

@@ -179,8 +179,13 @@
                 <ColumnDefinition Width="619*"/>
             </Grid.ColumnDefinitions>
             <DockPanel Background="{DynamicResource ContainerBackground}" Grid.Column="0">
-                <controls:HistoryComboBox x:Name="Directory" DockPanel.Dock="Top" AutomationProperties.Name="Directory Search Bar"
-                         ToolTip="This is the directory to search for performance data files." TextEntered="DoTextEnteredInDirectoryTextBox" />
+                <DockPanel DockPanel.Dock="Top">
+                    <Label x:Name="DirectoryLabel" Content="Path:" Target="{Binding ElementName=Directory}"
+                           VerticalAlignment="Center" Padding="5,0" />
+                    <controls:HistoryComboBox x:Name="Directory" AutomationProperties.Name="Directory Search Bar"
+                             AutomationProperties.LabeledBy="{Binding ElementName=DirectoryLabel}"
+                             ToolTip="This is the directory to search for performance data files." TextEntered="DoTextEnteredInDirectoryTextBox" />
+                </DockPanel>
                 <Grid DockPanel.Dock="Top" >
                     <Grid.ColumnDefinitions>
                         <ColumnDefinition Width="Auto"/>