Add presence validation for enic_reason #15296

Job	Run time
Build	5m 3s
Tests (unit_shared, on, real_world)	7m 1s
Tests (unit_shared, off, real_world)	7m 30s
Lint (rubocop)	1m 44s
Tests (unit_candidate-provider, on, real_world)	4m 58s
Lint (erblint)	1m 53s
Tests (unit_candidate-provider, off, real_world)	4m 50s
Deployment To Review v2	0s
Tests (unit_support-referee-api, on, real_world)	4m 21s
Lint (brakeman)	1m 11s
Tests (unit_support-referee-api, off, real_world)	4m 24s
Lint (yarn_lint)	1m 3s
Tests (integration_shared, on, real_world)	2m 56s
Tests (integration_shared, off, real_world)	2m 41s
Tests (integration_provider, on, real_world)	2m 56s
Tests (integration_provider, off, real_world)	3m 3s
Tests (integration_candidate, on, real_world)	3m 18s
Tests (integration_candidate, off, real_world)	3m 14s
Report on flakey specs in pull request	4s
Parallel deployment before production v2	0s
Production deployment v2	0s
Sandbox deployment v2	0s
Merge dependabot	0s
	1h 2m 10s

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