Fix files_dropped in HTML5 export. (Ignore trailing slash when creating the temporary directory)
Fix files_dropped in HTML5 export.
(Ignore trailing slash when creating the temporary directory)

(cherry picked from commit 40f26cb26097ab7ad62b18ec6018221616124b3f)

ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot