Fix incorrect toggle buttons (#23676)

Some of those are still Copy&Paste problems.

This PR:

* Only cleans the legacy incorrect code, doesn't change or improve the
"action" logic.
* Remove the redundant `$('.toggle.button').on('click')`, now
`$('.show-panel.button').on('click')` handles that kinds of buttons


Actually, there is only one correct "toggle button" in code, the one on
the webhook page.

No need to backport.

templates/repo/settings/webhook/history.tmpl

@@ -18,7 +18,7 @@
 						{{else}}
 							<span class="text red">{{svg "octicon-alert"}}</span>
 						{{end}}
-						<a class="ui primary sha label toggle button" data-target="#info-{{.ID}}">{{.UUID}}</a>
+						<a class="ui primary sha label toggle button show-panel" data-panel="#info-{{.ID}}">{{.UUID}}</a>
 						<div class="ui right">
 							<span class="text grey time">
 								{{.DeliveredString}}