Check for `is_dir()` instead of `file_exists()`.#740

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dougaxe1 wants to merge 1 commit intoWPDevelopers:masterfrom dougaxe1:fix/asset-path-is_dir

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Commits on Sep 20, 2022

Check for is_dir instead of file_exists. On some hosts with stream wrappers the file_exists check will always return true for directories even if it's not present.
dougaxe1
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