Merge pull request swiftlang#40030 from kimdv/kimdv/add-spaing-for-speced-operator

[LibSyntax] Add leading and trailing spacing for `SpacedBinaryOperator`

Author: ahoppen

utils/gyb_syntax_support/Token.py

@@ -336,7 +336,8 @@ def macro_name(self):
          serialization_code=105),
     Misc('UnspacedBinaryOperator', 'oper_binary_unspaced',
          serialization_code=107),
-    Misc('SpacedBinaryOperator', 'oper_binary_spaced', serialization_code=108),
+    Misc('SpacedBinaryOperator', 'oper_binary_spaced', serialization_code=108,
+         requires_leading_space=True, requires_trailing_space=True),
     Misc('PostfixOperator', 'oper_postfix', serialization_code=110),
     Misc('PrefixOperator', 'oper_prefix', serialization_code=109),
     Misc('DollarIdentifier', 'dollarident', classification='DollarIdentifier',