Mimic behavior of 'aref' when signalling out-of-range errors.

Mimic behavior of 'aref' when signalling out-of-range errors.

The convention used by 'aref' and friends is that for
'args-out-of-range', the error data is a list (SEQ INDEX).  Use the same
convention for the vector-related module functions.

* src/emacs-module.c (check_vec_index): Use vector and index as error
data.

(cherry picked from commit 8efcdcab8658ff9537fe483e0a12875cca90a527)