Fix WebKit issue with attribute selector using ‘type’ as attribute name.

Replace type by data.

Change-Id: Id87401a4f79b0bd160953fa5d0bc5d2393aaad6a
Merge topic 'vtkweb-fix-filebrowser-on-webkit' into master

f1ccc967 Fix WebKit issue with attribute selector using ‘type’ as attribute name.