fix(da): fix polling fallback when ws not available #2704

Job	Run time
Detect code changes	6s
Determine Image Tag	7s
proto / buf-check	6s
test / Go Mod Tidy Check	43s
test / Build All ev-node Binaries	2m 38s
test / Run Unit Tests	4m 23s
lint / hadolint	9s
test / Run Integration Tests	2m 14s
lint / markdown-lint	3m 16s
lint / golangci-lint	1m 26s
lint / goreleaser-check	11s
lint / yamllint	12s
docker / Build ev-node-evm	23m 47s
docker / Build ev-node-grpc	18m 28s
docker / Build ev-node-loadgen	15s
docker / Build ev-node-testapp	18m 17s
test / Run EVM Execution Tests	2m 20s
test / Run E2E System Tests	13m 15s
test / Combine and Upload Coverage	0s
docker-tests / Docker E2E Tests	6m 44s
docker-tests / Docker Upgrade E2E Tests	3m 51s
docker-tests / Docker Compatibility E2E Tests	4m 55s
	1h 47m 23s

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