BRCD-4351:Updated read preference - in order to get the most updated bill data. Changed switch links default value

See merge request sdoc/billrun!5650

BRCD-4351:Updated read preference - in order to get the most updated bill data. Fixed switch links default value

Add a hashed aid bills index + shard bills collection by it (BRCD-2820)

See merge request sdoc/billrun!5626

Periodic sync of 5.16 branch (BRCD-4286)

See merge request sdoc/billrun!5644

 Conflicts:
	conf/modules/billapi/subscribers.ini
	front-end/.env
	library/Billrun/Helpers/QueueCalculators.php
	public/asset-manifest.json
	public/index.html
	public/precache-manifest.06c98e10d6a52aa042cb39a4c1cce83f.js
	public/precache-manifest.7f58b392ed99b7531abaf0fe98817ade.js.orig
	public/precache-manifest.96ef0d6783632605d12072b4a266320f.js
	public/service-worker.js
	public/static/js/main.57b7baab.chunk.js.map

 Conflicts:
	application/modules/Billapi/Models/Entity.php
	library/Billrun/Rates/Util.php
	public/asset-manifest.json
	public/index.html
	public/precache-manifest.0fbb3f8c11722d21b8c288d893087bd1.js.orig
	public/precache-manifest.3d18545c6b5ea50f7a805eb31a878679.js
	public/precache-manifest.afda583cc6de4b5b74666cd135e6e6fc.js
	public/service-worker.js
	public/static/js/main.bed9eeb7.chunk.js.map

Add Roman's fix to crash on custom field param of type Multi SELECT (BRCD-2390)

See merge request sdoc/billrun!5637

BRCD-4535-  Improve running time of a repricing suggestion approval

See merge request sdoc/billrun!5635

 Conflicts:
	mongo/sharding.js

Shard bills collection only since MongoDB 6 + shard also through the main migration script (BRCD-2820)

BRCD-4577:Fixed log message wrong var type

See merge request sdoc/billrun!5629

Resolve BRCD-3479 "Rate caching"

See merge request sdoc/billrun!4777

 Conflicts:
	application/modules/Billapi/Models/Entity.php
	front-end/.env
	library/Billrun/Version.php
	public/static/js/main.bc40ed07.chunk.js

BRCD-4534: Credit button is disabled until getSuggestions processing is finished

See merge request sdoc/billrun!5606

Fix bug in set_external_subscribers_mode script when billable field doesn't exist yet (BRCD-4583)

See merge request sdoc/billrun!5624

BRCD-4566- Do not consider an external GBA error as a zero page

See merge request sdoc/billrun!5609

BRCD-4381: increased max value for Override Product Price

See merge request sdoc/billrun!5622

Fix bug in set_external_subscribers_mode script (overrides use_datetime_for_same_day_cycle compatibility)

BRCD-4582 : added  read preference configuration per action

See merge request sdoc/billrun!5616

also configure permanent change to  work  on primary