New tall style: formatting of multi-line record typedefs

[mernen]

The new formatter (#1253) changed the formatting of record typedefs, adding quite a bit of indentation:

Old formatter:

typedef ExampleRecordTypedef = (
  String firstParameter,
  int secondParameter,
  String thirdParameter,
  String fourthParameter,
);

New formatter:

typedef ExampleRecordTypedef =
    (
      String firstParameter,
      int secondParameter,
      String thirdParameter,
      String fourthParameter,
    );

This style seems a net positive to me in many circumstances, but specifically for records I see it mostly as a downgrade (unnecessary indentation and code churn), and I'd like to propose to special-case it.

This is similar in style to #1545/#1634, but for a completely different part of the syntax, so I figured it should be filed separately.

[mernen]

This would inevitably land in a discussion of where should the exceptions apply; for simplicity I'd propose only bare records (typedef Foo = (...);) and nullable records (typedef Foo = (...)?;), regardless of whether they contain positional or keyword fields. A record wrapped in another type of (e.g. typedef Foo = FutureOr<(...)>;) would be unchanged from the current tall-style.