Version two + hard_tabs adds indent on long generic types

With version=Two

fn foo(
	bar: Box<
		dyn Trait<
			'static,
			aaaaaaaaaaaaaaaaaaa::table,
			bbbbbbbbbbbbbbbbbbb::table,
			diesel::pg::Pg,
			SqlType = sql_types::Nullable<sql_types::Integer>,
		>,
	>,
) {
}

gets reformatted as:

fn foo(
	bar: Box<
		dyn Trait<
				'static,
				aaaaaaaaaaaaaaaaaaa::table,
				bbbbbbbbbbbbbbbbbbb::table,
				diesel::pg::Pg,
				SqlType = sql_types::Nullable<sql_types::Integer>,
			>,
	>,
) {
}

Start by reproducing the formatting with rustfmt using version=Two, hard_tabs, and the provided long generic type example. Trace the indentation handling for nested generic types and add regression coverage; done means the inner lines are not given the extra tab shown in the report.