util: refactor inspecting long lines

Using the `util.inspect` `compact` mode set to something else than
`true` resulted in breaking long lines in case the line would exceed
the `breakLength` option and if it contained whitespace and or new
lines.

It turned out that this behavior was less useful than originally
expected and it is now changed to only break on line breaks if the
`breakLength` option is exceeded for the inspected string. This should
be align better with the user expectation than the former behavior.

PR-URL: https://github.com/nodejs/node/pull/28055
Fixes: https://github.com/nodejs/node/issues/27690


Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>