Update localization strings in action classes

Replaced hardcoded string keys in `RunAsAdminAction`,
`RunAsAnotherUserAction`, and `RunWithPowershellAction`
with new keys from the `Strings` class for better
organization and management of localization resources.

Author: mrashutoshnigam

src/Files.App/Actions/Content/Run/RunAsAdminAction.cs

@@ -10,10 +10,10 @@ internal sealed partial class RunAsAdminAction : BaseRunAsAction
 		private readonly IContentPageContext ContentPageContext = Ioc.Default.GetRequiredService<IContentPageContext>();
 
 		public override string Label
-			=> "RunAsAdministrator".GetLocalizedResource();
+			=> Strings.RunAsAdministrator.GetLocalizedResource();
 
 		public override string Description
-			=> "RunAsAdminDescription".GetLocalizedResource();
+			=> Strings.RunAsAdminDescription.GetLocalizedResource();
 
 		public override RichGlyph Glyph
 			=> new("\uE7EF");

src/Files.App/Actions/Content/Run/RunAsAnotherUserAction.cs

@@ -9,10 +9,10 @@ internal sealed partial class RunAsAnotherUserAction : BaseRunAsAction
 	{
 		private readonly IContentPageContext ContentPageContext = Ioc.Default.GetRequiredService<IContentPageContext>();
 		public override string Label
-			=> "BaseLayoutContextFlyoutRunAsAnotherUser/Text".GetLocalizedResource();
+			=> Strings.BaseLayoutContextFlyoutRunAsAnotherUser_Text.GetLocalizedResource();
 
 		public override string Description
-			=> "RunAsAnotherUserDescription".GetLocalizedResource();
+			=> Strings.RunAsAnotherUserDescription.GetLocalizedResource();
 
 		public override RichGlyph Glyph
 			=> new("\uE7EE");

src/Files.App/Actions/Content/Run/RunWithPowershellAction.cs

@@ -10,10 +10,10 @@ internal sealed partial class RunWithPowershellAction : ObservableObject, IActio
 		private readonly IContentPageContext context;
 
 		public string Label
-			=> "RunWithPowerShell".GetLocalizedResource();
+			=> Strings.RunWithPowerShell.GetLocalizedResource();
 
 		public string Description
-			=> "RunWithPowershellDescription".GetLocalizedResource();
+			=> Strings.RunWithPowershellDescription.GetLocalizedResource();
 
 		public RichGlyph Glyph
 			=> new("\uE756");