Set search_path when doing "SET ROLE" for shared pool connection

Steps to Reproduce:

1. Set environment variable DB_MAXSHAREDPOOLSIZE=4
2. Set other environment variables as needed (PostgreSQL and Kafka)
3. Start mod-inventory-storage-25.0.1: java -jar target/mod-inventory-storage-fat.jar
4. Enable it for tenant diku with reference data using POST http://localhost:8081/_/tenant
5. Enable it for tenant t2 with reference data using POST http://localhost:8081/_/tenant
6. Disable it with purge option for tenant t2 using POST http://localhost:8081/_/tenant
7. For tenant diku call GET /instance-formats?query=cql.allRecords=1%20sortby%20name

Expected Results:
GET succeeds

Actual Results:
GET fails:

09:43:49 [] [diku] [] [mod_inventory_storage] ERROR PostgresClient       queryAndAnalyze: ERROR: function f_unaccent(text) does not exist (42883) - SELECT * FROM diku_mod_inventory_storage.instance_format WHERE true ORDER BY left(lower(f_unaccent(instance_format.jsonb->>'name')),600), lower(f_unaccent(instance_format.jsonb->>'name')) LIMIT 10 OFFSET 0
io.vertx.pgclient.PgException: ERROR: function f_unaccent(text) does not exist (42883)

Additional Information:
PostgresClient calls "SET ROLE" but doesn't call "SET SCHEMA":
https://github.com/folio-org/raml-module-builder/blob/v35.0.0/domain-models-runtime/src/main/java/org/folio/rest/persist/PostgresClient.java#L3497-L3516
"SET SCHEMA" is needed to set the search path.
When enabling tenant t2 reference data is loaded for schema t2_mod_inventory_storage using database connections that are kept open in idle state and re-used for the GET request.

Workaround:
After disabling/purging a tenant restart all (at least all RMB based) containers/pods.