fix(install): fallback to default downloader when aria2 fails

[kiennq]

Try to fallback to default downloader when aria2 download failed.
This make the download with aria2 more stable since there's some download links that doesn't support multi-connection.

Closes #4472

[rashil2000]

It would be better to not make this a default, and control it with a config variable instead. @kiennq can you fix the conficts?

[niheaven]

A refactoring of install.ps1 by separate downloading, extracting, and installing will be done after this release, and could you do the resolving after that?

[brian6932]

Would it not be better to just set aria2-max-connection-per-server to 1 if the download fails on retry?

[kiennq]

It would be better to not make this a default, and control it with a config variable instead. @kiennq can you fix the conficts?

I think it should be by default as this only fallback when the aria2 downloading fail. The warning and instruction to file a bug for aria2 is still showing though.

Would it not be better to just set aria2-max-connection-per-server to 1 if the download fails on retry?

I think once aria2 fails, it would be better to fall back into the default one instead of retrying with aria2 again, no?

A refactoring of install.ps1 by separate downloading, extracting, and installing will be done after this release, and could you do the resolving after that?

@niheaven Done

[brian6932]

I think once aria2 fails, it would be better to fall back into the default one instead of retrying with aria2 again, no?

Yea it's prob better to fallback to the default DLer. I remember when I had some wonky NIC driver settings, aria2c would fail (not really aria2c's fault tbf), but the default DLer worked, I take my last message back.

[niheaven]

Now you could add a changlog entry now.

[kiennq]

Now you could add a changlog entry now.

Done