ED2IN tags not in template aren't added from pecan.xml

[Aariq]

Bug Description

According to the documentation, ED2IN tags that aren't in the template ED2IN file can still be added by supplying them to the <ed2in_tags> tag in pecan.xml. The new tags are succesfully added to a list by modify_ed2in(), but write_ed2in() fails to add the new values here:

pecan/models/ed/R/write_ed2in.R

Line 30 in d293486

file_body[attr(ed2in, "value_linenos")] <- tags_values_vec

When there are new ED2IN tags, these vectors are of different lengths and the new vectors aren't added.

To Reproduce

Steps to reproduce the behavior:
Add an arbitrary <ed2in_tags> to pecan.xml, read in settings, run run.write.configs(settings), inspect ED2IN in run folder

Expected behavior

New tags should be added at the bottom of the ED2IN file.