fix: streaming

[lukasdotcom]

Streaming did not work for me when using ex app routes and downloading a large file through them. Not sure if this is a correct or valid way to fix it, but it does allow downloading large files.

[bigcat88]

At first look:

The problem that stream can break createProxyResponse with current changes.

We need at least check for $isHTML in the code(ExAppGet,...) and if it true then we will skip using stream.

To keep code clean we need to pass flag isHTML in the createProxyResponse to not duplicate code and not do double check for isHTML.

[bigcat88]

Generally this is a nice bugfix/feature. Make sure to squash commits manually(I updated branch as you had created this PR from too old AppAPI version that was not working in my setup), as I guess, this should be backported to the NC31 and NC30.

[lukasdotcom]

/backport to stable31

[lukasdotcom]

/backport to stable30

[lukasdotcom]

Generally this is a nice bugfix/feature. Make sure to squash commits manually(I updated branch as you had created this PR from too old AppAPI version that was not working in my setup), as I guess, this should be backported to the NC31 and NC30.

I squashed it to one commit and also implemented so streaming only happens when it isn't an html file.

[oleksandr-nc]

Thank you very much for not only finding the bug, but also making a fix.