Fix custom option selection handling #5136

Job	Run time
build-and-check	2m 35s
test-backend	48s
test-packages/agent-runtime	53s
test-integration-.agents	1m 12s
test-common	38s
test-sdk	46s
test-integration-packages/agent-runtime	42s
test-.agents	47s
test-npm-app	39s
test-integration-common	45s
test-integration-packages/billing	49s
test-packages/billing	41s
test-packages/internal	39s
test-cli	1m 13s
test-web	42s
test-integration-web	36s
test-integration-cli	38s
test-integration-packages/internal	48s
test-integration-npm-app	46s
test-integration-sdk	59s
test-integration-backend	43s
	18m 19s

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