http2: make nghttp2 less picky about field whitespace #9448
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In nghttp2 1.49.0 it returns error on leading and trailing whitespace in header fields according to language in the recently shipped RFC 9113.
nghttp2 1.50.0 introduces an option to switch off this strict check and this change enables this by default which should make curl behave more similar to how it did with nghttp2 1.48.0 and earlier.
We might want to consider making this an option in the future.