[FEATURE] Remove includePortInHostHeader

[dblock]

Is your feature request related to a problem?

The library has a client builder option includePortInHostHeader. This seems unnecessary. Why do we need an option at all? Can we replace it with the solution below of automatically including the port number unless it's a default port?

What solution would you like?

A port should always be included if it's not the default one (HTTP = 80, HTTPS = 443).

Do you have any additional context?

Coming from https://github.com/opensearch-project/opensearch-php/pull/118

[saimedhi]

Hello @joanna-bak-sourceability, I hope you're doing well. If you have a moment to spare, would you be open to considering taking up this issue? Thank you.