Tammie Lister 9b054b0ac6 Twenty Twelve: Fixes submenu hiding under slideshow block.
Whilst initially this could be thought to be solved in Jetpack due to submenus only having a z-index of 1 a fix is desirable. This brings in the suggested value.

Props robertghetau, SergeyBiryukov, sabernhardt, poena, narenin.
Fixes #55892.

Built from https://develop.svn.wordpress.org/trunk@58776


git-svn-id: http://core.svn.wordpress.org/trunk@58178 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2024-07-22 15:36:14 +00:00
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