"f_unaccent(text)" function not found in reference environments

Occasionally we have seen an error from the UI in the reference environments which reports:

operation GET on resource XXX failed, saying: ERROR: function f_unaccent(text) does not exist (42883)

Superficially, it appears to be coming primarily from endpoints that pull data from mod-inventory-storage, though more investigation is needed.

This function should be created in the module schema for RMB modules when the module is initialized for the tenant (so it may be a build problem). Strangely, the problem doesn't always occur, and different builds using the same module versions may not exhibit the same symptoms.