Autocompletion of record fields in the middle of module

Not sure if it's possible to handle but autocompletion of record fields when cursor is placed before _something_ (e.g. `let`) doesn't work unless it's wrapped in parentheses.

Demo: https://cl.ly/3w1G1h3u0E2O

Reproduce the record-field autocompletion failure described in the issue and compare it with the parenthesized form shown in the linked demo. Trace the autocomplete handling for a cursor before `let`; done means suggestions work there without requiring parentheses, with regression coverage if the project’s existing tests support it.

Written by the indexing model from the issue text.