switch fixIncludeKeyletFields to Supported::yes (#5819)

Author: mvadari

include/xrpl/protocol/detail/features.macro

@@ -32,7 +32,7 @@
 // If you add an amendment here, then do not forget to increment `numFeatures`
 // in include/xrpl/protocol/Feature.h.
 
-XRPL_FIX    (IncludeKeyletFields,        Supported::no,  VoteBehavior::DefaultNo)
+XRPL_FIX    (IncludeKeyletFields,        Supported::yes, VoteBehavior::DefaultNo)
 XRPL_FEATURE(DynamicMPT,                 Supported::no,  VoteBehavior::DefaultNo)
 XRPL_FIX    (TokenEscrowV1,              Supported::yes, VoteBehavior::DefaultNo)
 XRPL_FIX    (DelegateV1_1,               Supported::no,  VoteBehavior::DefaultNo)