[Console] Avoided an unnecessary check.

It only makes sense to do the second check if the --no-interaction
option was not passed.

Running posix_isatty() raises a warning with some stream types (like MEMORY).
With this patch, warning could be avoided by passing the --no-interaction option.
merged branch jakzal/console-interaction-check (PR #8386)

This PR was merged into the 2.3 branch.

Discussion
----------

[Console] Avoided an unnecessary check if a stream is an interactive terminal

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

It only makes sense to do the second check, if the first one evaluates to false (so the `--no-interaction` option was not passed).

Running `posix_isatty()` raises a warning with some stream types (like in-memory stream). With this patch, warning could be avoided by passing the `--no-interaction option` (which is what we want with an in-memory stream).

The warning I'm getting is:

```
PHP Warning:  posix_isatty(): could not use stream of type 'MEMORY' in vendor/symfony/console/Symfony/Component/Console/Application.php on line 866
```

Commits
-------

e46fd4e [Console] Avoided an unnecessary check.