proto: add field to indicate if the polling response ex[ects another batch #6526

Job	Run time
Build docker image	5m 59s
config-e2e	1s
Agent unit tests	1m 6s
CLI unit tests	34s
API Server unit tests	2m 43s
WebUI unit tests	1m 49s
CLI smoke tests (local)	40s
Test examples (collector)	39s
CLI smoke tests (docker)	42s
Tracetesting API Server (InMemory)	4m 20s
Test examples (tracetest-jaeger)	39s
WebUI End-to-end tests (1)	2m 35s
WebUI End-to-end tests (2)	2m 42s
Test examples (tracetest-opensearch)	7m 26s
Tracetesting API Server (NATS)	4m 1s
WebUI End-to-end tests (3)	3m 33s
Test examples (tracetest-tempo)	40s
CLI e2e tests (8, 0)	1m 40s
WebUI End-to-end tests (4)	2m 29s
Test examples (tracetest-provisioning-env)	38s
CLI e2e tests (8, 1)	1m 19s
WebUI End-to-end tests (5)	2m 35s
CLI e2e tests (8, 2)	1m 18s
WebUI End-to-end tests (6)	2m 31s
CLI e2e tests (8, 3)	1m 16s
WebUI End-to-end tests (7)	2m 36s
CLI e2e tests (8, 4)	1m 22s
WebUI End-to-end tests (8)	2m 28s
CLI e2e tests (8, 5)	2m 34s
CLI e2e tests (8, 6)	1m 20s
CLI e2e tests (8, 7)	3m 29s
	1h 7m 44s

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