CmdPal: Improve loading of application icons - part 1 (#44938)

## Summary of the Pull Request

This PR improves loading of application icons:

- Fixes loading of icons from internet shortcuts

## Pictures? Pictures!

<img width="683" height="399" alt="image"
src="https://github.com/user-attachments/assets/5e566648-7b1a-4254-8afd-557a321b19d6"
/>


<!-- Please review the items on the PR checklist before submitting-->
## PR Checklist

- [x] Closes: #44819
<!-- - [ ] Closes: #yyy (add separate lines for additional resolved
issues) -->
- [ ] **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

<!-- Provide a more detailed description of the PR, other things fixed,
or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments

<!-- Describe how you validated the behavior. Add automated tests
wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/AppListItem.cs

@@ -98,18 +98,16 @@ public sealed partial class AppListItem : ListItem
         }
         else
         {
-            try
+            // do nothing if we fail to load an icon.
+            // Logging it would be too NOISY, there's really no need.
+            if (!string.IsNullOrEmpty(_app.IcoPath))
             {
-                var stream = await ThumbnailHelper.GetThumbnail(_app.ExePath, true);
-                if (stream is not null)
-                {
-                    heroImage = IconInfo.FromStream(stream);
-                }
+                heroImage = await TryLoadThumbnail(_app.IcoPath, jumbo: true, logOnFailure: false);
             }
-            catch (Exception)
+
+            if (heroImage == null && !string.IsNullOrEmpty(_app.ExePath))
             {
-                // do nothing if we fail to load an icon.
-                // Logging it would be too NOISY, there's really no need.
+                heroImage = await TryLoadThumbnail(_app.ExePath, jumbo: true, logOnFailure: false);
             }
         }
 
@@ -132,26 +130,19 @@ public sealed partial class AppListItem : ListItem
 
         if (useThumbnails)
         {
-            try
+            if (!string.IsNullOrEmpty(_app.IcoPath))
             {
-                var stream = await ThumbnailHelper.GetThumbnail(_app.ExePath);
-                if (stream is not null)
-                {
-                    icon = IconInfo.FromStream(stream);
-                }
-            }
-            catch (Exception ex)
-            {
-                Logger.LogDebug($"Failed to load icon for {AppIdentifier}:\n{ex}");
+                icon = await TryLoadThumbnail(_app.IcoPath, jumbo: false, logOnFailure: true);
             }
 
-            icon = icon ?? new IconInfo(_app.IcoPath);
-        }
-        else
-        {
-            icon = new IconInfo(_app.IcoPath);
+            if (icon == null && !string.IsNullOrEmpty(_app.ExePath))
+            {
+                icon = await TryLoadThumbnail(_app.ExePath, jumbo: false, logOnFailure: true);
+            }
         }
 
+        icon ??= new IconInfo(_app.IcoPath);
+
         return icon;
     }
 
@@ -183,4 +174,25 @@ public sealed partial class AppListItem : ListItem
 
         return newCommands.ToArray();
     }
+
+    private async Task<IconInfo?> TryLoadThumbnail(string path, bool jumbo, bool logOnFailure)
+    {
+        try
+        {
+            var stream = await ThumbnailHelper.GetThumbnail(path, jumbo);
+            if (stream is not null)
+            {
+                return IconInfo.FromStream(stream);
+            }
+        }
+        catch (Exception ex)
+        {
+            if (logOnFailure)
+            {
+                Logger.LogDebug($"Failed to load icon {path} for {AppIdentifier}:\n{ex}");
+            }
+        }
+
+        return null;
+    }
 }

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Programs/Win32Program.cs

@@ -1052,9 +1052,6 @@ public class Win32Program : IProgram
                 app.FullPath) :
             app.IcoPath;
 
-        icoPath = icoPath.EndsWith(".lnk", System.StringComparison.InvariantCultureIgnoreCase) ?
-            app.FullPath :
-            icoPath;
         return new AppItem()
         {
             Name = app.Name,