[CmdPal] Visual dock tweaks (#45954)

## Summary of the Pull Request

- Changes the Dock height to 38px (from 32) to avoid item and app
clipping.
- Localization
- Removing dead code
- If the tooltip string is null or empty, the tooltip will not be shown
- Adding hyperlinks on the General and Dock pages in Settings (to be
updated to the corresponding docs via aka.ms)
- The droptarget for an empty listview is now wider, and has a
highlight-color to communicate an item can be dropped:
<img width="371" height="142" alt="image"
src="https://github.com/user-attachments/assets/6863ca5a-cdd4-450b-ab57-d03d83170cf8"
/>



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

- [ ] Closes: #xxx
<!-- - [ ] 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/Microsoft.CmdPal.UI/Settings/DockSettingsPage.xaml

@@ -21,7 +21,7 @@
             <RowDefinition Height="*" />
         </Grid.RowDefinitions>
         <ScrollViewer Grid.Row="1">
-            <Grid Padding="16">
+            <Grid Padding="16,0,16,16">
                 <StackPanel
                     MaxWidth="1000"
                     HorizontalAlignment="Stretch"
@@ -37,6 +37,12 @@
                   <RepositionThemeTransition IsStaggeringEnabled="False" />
               </StackPanel.ChildrenTransitions>-->
 
+                    <HyperlinkButton
+                        x:Uid="CmdPalDock_LearnMore"
+                        Margin="0,0,0,36"
+                        Padding="0"
+                        FontWeight="SemiBold"
+                        NavigateUri="https://aka.ms/cmdpal-dock" />
                     <!--  Enable Dock  -->
                     <controls:SettingsCard x:Uid="Settings_GeneralPage_EnableDock_SettingsCard" HeaderIcon="{ui:FontIcon Glyph=&#xF596;}">
                         <ToggleSwitch IsOn="{x:Bind ViewModel.EnableDock, Mode=TwoWay}" />

src/modules/cmdpal/Microsoft.CmdPal.UI/Settings/GeneralPage.xaml

@@ -19,7 +19,7 @@
             <RowDefinition Height="*" />
         </Grid.RowDefinitions>
         <ScrollViewer Grid.Row="1">
-            <Grid Padding="16">
+            <Grid Padding="16,0,16,16">
                 <StackPanel
                     MaxWidth="1000"
                     HorizontalAlignment="Stretch"
@@ -36,6 +36,11 @@
               </StackPanel.ChildrenTransitions>-->
 
                     <!--  'Activation' section  -->
+                    <HyperlinkButton
+                        x:Uid="CmdPal_LearnMore"
+                        Padding="0"
+                        FontWeight="SemiBold"
+                        NavigateUri="https://aka.ms/cmdpal" />
 
                     <TextBlock x:Uid="ActivationSettingsHeader" Style="{StaticResource SettingsSectionHeaderTextBlockStyle}" />
                     <controls:SettingsExpander