Summary:
Range filter value parser was broken when the column was hiden in the
widget. In that case the column filter get passed a column record instead
of a view field record. Hence, the diff fixes the issue by adding a
`.createValueParser()` method to column record (ColumnRec).
https://gristlabs.getgrist.com/doc/check-ins/p/12#a1.s19.r2239.c19
Test Plan: Diff adds new nbrowser test.
Reviewers: paulfitz
Reviewed By: paulfitz
Differential Revision: https://phab.getgrist.com/D3731