chore: update jQuery UI to 1.14.2 (latest)

[Copilot]

Previous update stopped at 1.13.3; 1.14.2 is the actual latest stable release (2026-01-28).

Changes

• Web/scripts/js/jquery-ui.1.14.2.min.js — new local JS asset from official npm package
• Web/scripts/css/smoothness/jquery-ui.1.14.2.min.css — new local smoothness theme CSS
• Web/scripts/css/smoothness/images/ — sprite images updated to 1.14.2
• tpl/globalheader.tpl — all four load paths bumped (local JS, CDN JS + SRI hash, local CSS, CDN CSS):

- {jsfile src="js/jquery-ui.1.13.3.min.js"}
+ {jsfile src="js/jquery-ui.1.14.2.min.js"}

- <script src="https://code.jquery.com/ui/1.13.3/jquery-ui.min.js"
-     integrity="sha256-sw0iNNXmOJbQhYFuC9OF2kOlD5KQKe1y5lfBn4C9Sjg=" ...>
+ <script src="https://code.jquery.com/ui/1.14.2/jquery-ui.min.js"
+     integrity="sha256-mblSWfbYzaq/f+4akyMhE6XELCou4jbkgPv+JQPER2M=" ...>

- {cssfile src="scripts/css/smoothness/jquery-ui.1.13.3.min.css"}
+ {cssfile src="scripts/css/smoothness/jquery-ui.1.14.2.min.css"}

- <link href="https://code.jquery.com/ui/1.13.3/themes/smoothness/jquery-ui.css" ...>
+ <link href="https://code.jquery.com/ui/1.14.2/themes/smoothness/jquery-ui.css" ...>

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