test: add test for expression template `hasVarInEnv` #23124

Job	Run time
argo-images (argoexec)	3m 46s
argo-images (argocli)	3m 40s
Get changed files	6s
Unit Tests	5m 2s
Windows Unit Tests	6m 5s
Codegen	0s
Lint	4m 9s
UI	0s
E2E Tests (test-executor, minimal, false)	15m 55s
E2E Tests (test-corefunctional, minimal, false)	15m 52s
E2E Tests (test-functional, minimal, false)	21m 52s
E2E Tests (test-api, mysql, true)	12m 35s
E2E Tests (test-cli, mysql, true)	14m 57s
E2E Tests (test-cron, minimal, false)	24m 54s
E2E Tests (test-examples, minimal, false)	5m 23s
E2E Tests (test-plugins, plugins, false)	7m 43s
E2E Tests (test-java-sdk, minimal, true)	4m 55s
E2E Tests (test-python-sdk, minimal, true)	7m 55s
E2E Tests (test-executor, v1.28.13+k3s1, minimal, false)	16m 37s
E2E Tests (test-corefunctional, v1.28.13+k3s1, minimal, false)	15m 13s
E2E Tests (test-functional, v1.28.13+k3s1, minimal, false)	25m 10s
E2E Tests - Composite result	1s
	3h 31m 50s

Provide feedback