Fixes#44761, was a regression from #44524.
The PR passed CI because EditorNode::get_viewport() used to shadow Node::get_viewport()
(which was a bug in itself, fixed by #44524), so once it was renamed the existing code
relying on it fell back to the now available Node::get_viewport().
This might bite some thirdparty modules too.
Which means that reduz' beloved style which we all became used to
will now be changed automatically to remove the first empty line.
This makes us lean closer to 1TBS (the one true brace style) instead
of hybridating it with some Allman-inspired spacing.
There's still the case of braces around single-statement blocks that
needs to be addressed (but clang-format can't help with that, but
clang-tidy may if we agree about it).
Part of #33027.
