Allow posting media alongside polls #1825

Job	Run time
build (production)	3m 51s
build (test)	3m 41s
test (3.2)	6m 1s
End to End testing (3.2)	2m 35s
test (3.3)	5m 20s
End to End testing (3.3)	3m 10s
test (.ruby-version)	6m 48s
End to End testing (.ruby-version)	2m 43s
Libvips tests (3.2)	1m 33s
Elastic Search integration testing (3.2, docker.elastic.co/elasticsearch/elasticsearch:7.17.13)	3m 1s
Libvips tests (3.3)	1m 48s
Elastic Search integration testing (3.3, docker.elastic.co/elasticsearch/elasticsearch:7.17.13)	3m 46s
Libvips tests (.ruby-version)	3m 43s
Elastic Search integration testing (.ruby-version, docker.elastic.co/elasticsearch/elasticsearch:...	3m 15s
Elastic Search integration testing (.ruby-version, docker.elastic.co/elasticsearch/elasticsearch:...	3m 10s
Elastic Search integration testing (.ruby-version, opensearchproject/opensearch:2)	3m 22s
	57m 47s

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