fix: don't use ui endpoint for version checking (#3992) #6461

Job	Run time
WebUI unit tests	2m 1s
Agent unit tests	1m 47s
Build docker image	5m 43s
CLI unit tests	42s
API Server unit tests	2m 33s
config-e2e	1s
Test examples (collector)	41s
Test examples (tracetest-jaeger)	41s
CLI e2e tests (8, 0)	1m 21s
CLI smoke tests (local)	41s
WebUI End-to-end tests (1)	2m 50s
CLI e2e tests (8, 1)	1m 23s
Test examples (tracetest-opensearch)	7m 29s
CLI smoke tests (docker)	45s
WebUI End-to-end tests (2)	2m 48s
CLI e2e tests (8, 2)	1m 23s
Test examples (tracetest-tempo)	39s
WebUI End-to-end tests (3)	2m 47s
CLI e2e tests (8, 3)	1m 35s
Test examples (tracetest-provisioning-env)	43s
WebUI End-to-end tests (4)	2m 49s
CLI e2e tests (8, 4)	1m 28s
Tracetesting API Server (InMemory)	3m 57s
WebUI End-to-end tests (5)	2m 47s
CLI e2e tests (8, 5)	2m 31s
WebUI End-to-end tests (6)	2m 42s
CLI e2e tests (8, 6)	1m 46s
Tracetesting API Server (NATS)	3m 48s
WebUI End-to-end tests (7)	2m 46s
CLI e2e tests (8, 7)	3m 35s
WebUI End-to-end tests (8)	3m 45s
	1h 10m 27s

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