CmdPal: Replace Tapped events with generic ones (#40640)

## Summary of the Pull Request
Click event on WinUI buttons handle more than just click and is more
versatile that Tapped event. When you tap a Button with a finger or
stylus, or press a left mouse button while the pointer is over it, the
button raises the Click event. If a button has keyboard focus, pressing
the Enter key or the Spacebar key also raises the Click event.

This PR also replaces the right-tapped event on items on the list page
with context menu handling, allowing other input gestures (such as
Shift+F10) to also display the context menu.

And finally, it adds a button to the status messages badge so that the
flyout can be opened using the keyboard.

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## PR Checklist

- [x] **Closes:** #40616 
- [ ] **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

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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

Tested on desktop with keyboard and mouse (no cats), and SB2 with touch
and pen. Input gestures seem to work as intended.

---------

Co-authored-by: Mike Griese <migrie@microsoft.com>

src/modules/cmdpal/Microsoft.CmdPal.UI/Strings/en-us/Resources.resw

@@ -428,4 +428,10 @@ Right-click to remove the key combination, thereby deactivating the shortcut.</v
   <data name="Settings_ExtensionPage_Alias_ToggleSwitch.OffContent" xml:space="preserve">
     <value>Indirect</value>
   </data>
+  <data name="StatusMessagesButton.[using:Microsoft.UI.Xaml.Automation]AutomationProperties.Name" xml:space="preserve">
+    <value>Show status messages</value>
+  </data>
+  <data name="StatusMessagesButton.[using:Microsoft.UI.Xaml.Controls]ToolTipService.ToolTip" xml:space="preserve">
+    <value>Show status messages</value>
+  </data>
 </root>