KBM Icon fix (#46157)

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## Summary of the Pull Request

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## PR Checklist

- [ ] Closes: #xxx
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- [ ] **Communication:** I've discussed this with core contributors
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- [ ] **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
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## Detailed Description of the Pull Request / Additional comments

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---------

Co-authored-by: Zach Teutsch <88554871+zateutsch@users.noreply.github.com>
Co-authored-by: Dustin L. Howett <dustin@howett.net>

installer/PowerToysSetupVNext/KeyboardManager.wxs

@@ -3,18 +3,28 @@
   <?include $(sys.CURRENTDIR)\Common.wxi?>
 
   <?define KeyboardManagerAssetsFiles=?>
+  <?define KeyboardManagerAssetsWinUI3Files=?>
   <?define KeyboardManagerAssetsFilesPath=$(var.BinDir)\Assets\KeyboardManager\?>
+  <?define KeyboardManagerAssetsWinUI3FilesPath=$(var.BinDir)\WinUI3Apps\Assets\KeyboardManagerEditor\?>
 
   <Fragment>
     <DirectoryRef Id="BaseApplicationsAssetsFolder">
       <Directory Id="KeyboardManagerAssetsInstallFolder" Name="KeyboardManager" />
     </DirectoryRef>
+    <DirectoryRef Id="WinUI3AppsAssetsFolder">
+      <Directory Id="KeyboardManagerAssetsWinUI3InstallFolder" Name="KeyboardManagerEditor" />
+    </DirectoryRef>
 
     <DirectoryRef Id="KeyboardManagerAssetsInstallFolder" FileSource="$(var.KeyboardManagerAssetsFilesPath)">
     <!-- Generated by generateFileComponents.ps1 -->
     <!--KeyboardManagerAssetsFiles_Component_Def-->
     </DirectoryRef>
 
+    <DirectoryRef Id="KeyboardManagerAssetsWinUI3InstallFolder" FileSource="$(var.KeyboardManagerAssetsWinUI3FilesPath)">
+    <!-- Generated by generateFileComponents.ps1 -->
+    <!--KeyboardManagerAssetsWinUI3Files_Component_Def-->
+    </DirectoryRef>
+
     <DirectoryRef Id="INSTALLFOLDER">
       <Directory Id="KeyboardManagerEditorInstallFolder" Name="KeyboardManagerEditor" />
       <Directory Id="KeyboardManagerEngineInstallFolder" Name="KeyboardManagerEngine" />
@@ -57,6 +67,7 @@
           <RegistryValue Type="string" Name="RemoveKeyboardManagerFolder" Value="" KeyPath="yes" />
         </RegistryKey>
         <RemoveFolder Id="RemoveFolderKeyboardManagerAssetsInstallFolder" Directory="KeyboardManagerAssetsInstallFolder" On="uninstall" />
+        <RemoveFolder Id="RemoveFolderKeyboardManagerAssetsWinUI3InstallFolder" Directory="KeyboardManagerAssetsWinUI3InstallFolder" On="uninstall" />
         <RemoveFolder Id="RemoveFolderKeyboardManagerEditorFolder" Directory="KeyboardManagerEditorInstallFolder" On="uninstall" />
         <RemoveFolder Id="RemoveFolderKeyboardManagerEngineFolder" Directory="KeyboardManagerEngineInstallFolder" On="uninstall" />
       </Component>