Dart: Breaking change 45871: Drop Content-Length:0 header from GET/HEAD requests

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We propose to not to include Content-Length header in GET/HEAD http requests when its value is 0(when there is no payload as part of the http request). See official breaking change request: [Breaking Change Request] [io/http] Drop Content-Length:0 header from CONNECT,DELETE,GET,HEAD requests · Issue #45871 · dart-lang/sdk · GitHub Please add comments to the issue if you have concerns about this

Get the full details here: https://groups.google.com/a/dartlang.org/d/msg/announce/b0cncgjcRf4/Gse5s_F9DAAJ