Switch v1 receivers to use v2 write path #992

Job	Run time
badger / badger (v1)	2m 1s
cassandra / cassandra-4.x v1 schema=manual	5m 57s
elasticsearch / elasticsearch 6.x v1	5m 42s
cassandra / cassandra-5.x v1 schema=manual	5m 57s
elasticsearch / elasticsearch 7.x v1	6m 23s
cassandra / cassandra-4.x v2 schema=manual	8m 0s
badger / badger (v2)	4m 0s
elasticsearch / elasticsearch 8.x v1	5m 55s
cassandra / cassandra-5.x v2 schema=manual	7m 48s
elasticsearch / elasticsearch 8.x v2	6m 29s
cassandra / cassandra-4.x v2 schema=auto	7m 33s
grpc / grpc (v1)	2m 21s
grpc / grpc (v2)	4m 3s
kafka / kafka 3.x v1	2m 20s
kafka / kafka 3.x v2	5m 16s
cassandra / cassandra-5.x v2 schema=auto	7m 31s
memory / memory-v2	4m 1s
opensearch / opensearch 1.x v1	6m 16s
opensearch / opensearch 2.x v1	6m 19s
opensearch / opensearch 2.x v2	6m 2s
	1h 49m 54s

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