I have a single .phtml file that is no longer shown or editable as a PHP file.
I believe this was triggered by an accidental keyboard shortcut combo when I thought I was typing on my windows machine, but I have no idea what the shortcut was or how to reverse it.
The file was fine, then suddenly it had an icon like a text file with an X on it... and no longer had formatting, colours, etc. of a php file:
All of the support answers I have found related to this say to go to Settings > File Types... but everything is fine there, somehow only this one file is affected.
What can I do to reset this file to be recognized as a php file?