com_media: normalizing uploaded file names #23259
Pull Request for Issue #23249
Summary of Changes
Adding hyphens to allowed characters in file names uploaded by drag and drop in TinyMCE.
Normalizing file names in direct com_media upload files to fit with the drag and drop format:
Upload a file (usually an image) containing spaces and periods in other place than before the extension, both using com_media and drag and drop.
An image which name on the desktop is
will be uploaded to Joomla as
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