Remove striped tables in UI (#36509)

We've been cutting down on the "striped" tables (where rows are using
alternate row background colors). This completely removes them as I
think such a design looks outdated.

The removal of selectors starting with `.ui[class*="very
basic"].table:not(.striped)` is needed because of a specificity issue in
the CSS where table cells would otherwise render with incorrect padding.

Example of one affected table:

<img width="1027" height="224" alt="image"
src="https://github.com/user-attachments/assets/2f3006ca-99a1-4655-afdb-b7cd9e5f19c7"
/>

templates/admin/queue.tmpl

@@ -4,7 +4,7 @@
 		{{ctx.Locale.Tr "admin.monitor.queues"}}
 	</h4>
 	<div class="ui attached table segment">
-		<table class="ui very basic striped table unstackable">
+		<table class="ui very basic table unstackable">
 			<thead>
 			<tr>
 				<th>{{ctx.Locale.Tr "admin.monitor.queue.name"}}</th>