api: revert to defaulting to http/1 #10958
Merged
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PR #10778 incidentally changed the api http client to connect with
HTTP/2 first. However, the websocket libraries used in
alloc exec
features don't handle http/2 well, and don't downgrade to http/1
gracefully.
Given that the switch is incidental, and not requested by users.
Furthermore, api consumers can opt-in to forcing http/2 by setting
custom http clients.
Fixes #10922