Add category search chips to Install tab for improved filtering (#4826)

* Add Quick Category Search Chips to Install tab

Add category shortcut chips on the Install tab that insert the category
name into the existing search box. Append each app's category as a
description tag so the existing description search filters by category.
Reuses the standard button style and existing search; no search, install,
or preset logic is changed.

* Fix install category chip filtering

* Fix category filter refresh behavior

---------

Co-authored-by: Chris Titus <contact@christitus.com>

pester/install-rendering.Tests.ps1

@@ -21,6 +21,7 @@ Describe "Install app rendering startup contract" {
         $renderScript | Should -Match 'Dispatcher\.BeginInvoke'
         $renderScript | Should -Match 'Invoke-WinUtilInstallAppRenderNextBatch'
         $renderScript | Should -Match 'Initialize-InstallAppEntry'
+        $renderScript | Should -Match 'Find-AppsByNameOrDescription -SearchString \$sync\.SearchBar\.Text -Category \$sync\.SearchBar\.Tag'
         $renderScript | Should -Match '\$sync\.InstallAppEntriesRendered = \$true'
     }
 
@@ -59,7 +60,7 @@ Describe "Install app rendering startup contract" {
             }
 
             function global:Find-AppsByNameOrDescription {
-                param($SearchString)
+                param($SearchString, $Category)
                 throw "Search should not run for an empty search box in this test."
             }