[web/views] Fix AutoformSectionRelationTags.set_muledit_editable It is a method call, so `self` is passed implicitely as first argument, so it is useless to pass it also explicitely as second argument. In fact, it does not work without this. A monkey patch had been done in a private client's project, but the fix is revelant for everyone.

Release notes
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.. toctree::
    :maxdepth: 1

    3.27
    3.26
    3.25
    3.24
    3.23
    3.22
    3.21
    3.20
    3.19
    3.18
    3.17
    3.16
    3.15
    3.14