Enhance terminal size detection for multiple outputs

[alankingpl0-oss]

Added additional checks for terminal size using STDERR and STDOUT.

[testclutch]

Analysis of PR #22276 at c8aabda4:

Test 311 failed, but it has been 2.1% flaky lately, so it's probably NOT a fault of the PR. Note that this test has failed in 12 different CI jobs (the link just goes to one of them).

Generated by Testclutch

[jay]

If retrieving the terminal size via stdin is a problem because of redirect, then that could also be true of stdout, stderr etc, so should there be a isatty check or something like that (edit: I think the ioctl is probably sufficient if it checks that)

[jay]

also why does it say /* You are not expected to understand this */ and there's an extra guard that makes no sense

[jay]

The reporter seems to be MIA on this but I think it's probably a good idea to get terminal columns from stderr , stdout etc if stdin isn't a terminal. @bagder is there a reason you chose stdin, did it seem most likely, or do you have any objection to this change?

[bagder]

Looks good, assuming the minor nits are addressed.

[bagder]

is there a reason you chose stdin

Sorry, I can't recall why I selected stdin for this!

[jay]

Despite no response from the author I've landed this with everyone's suggested changes.