Fix for CmdPal settings page offset (#46568)

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fix/what does it change/how was it tested (even manually, if necessary)?
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## Summary of the Pull Request

This is a weird bug in WinUI where a child panel gets a weird offset
when wrapped in a `ScrollViewer` and if it has a `MaxWidth`. The
solution is to wrap it with another panel 🤷

Top: with fix
Bottom: 0.98.1
<img width="1351" height="1259" alt="image"
src="https://github.com/user-attachments/assets/076ac947-58d1-4031-8be3-300a8511a636"
/>


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## PR Checklist

- [x] Closes: #46238
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issues) -->
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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: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Jiří Polášek <me@jiripolasek.com>

src/settings-ui/Settings.UI/SettingsXAML/Views/CmdPalPage.xaml

@@ -13,8 +13,10 @@
     mc:Ignorable="d">
     <Grid>
         <ScrollViewer AutomationProperties.AutomationId="PageScrollViewer">
+            <!--  Wrapper Grid required to work around WinUI ScrollViewer + MaxWidth layout offset issue. Do not remove.  -->
+            <Grid>
                 <Grid
-                MaxWidth="1000"
+                    MaxWidth="{StaticResource PageMaxWidth}"
                     Padding="16,0,16,0"
                     VerticalAlignment="Top"
                     Background="{ThemeResource CardBackgroundFillColorDefaultBrush}"
@@ -216,6 +218,7 @@
                             IsEnabled="{x:Bind ViewModel.IsEnabled, Mode=OneWay}" />
                     </StackPanel>
                 </Grid>
+            </Grid>
         </ScrollViewer>
     </Grid>
 </local:NavigablePage>