Fix refinement handling in rj grammar

Author: RajShivu

liquidjava-verifier/src/main/antlr4/rj/grammar/RJ.g4

@@ -92,7 +92,7 @@ BOOL    : 'true' | 'false';
 ID_UPPER: ([A-Z][a-zA-Z0-9]*);
 OBJECT_TYPE:
 		  (([a-zA-Z][a-zA-Z0-9]+) ('.' [a-zA-Z][a-zA-Z0-9]*)+);
-ID     	: '#'*[a-zA-Z_][a-zA-Z0-9_#]*;
+ID     	: '#'*('$')? [a-zA-Z_] [a-zA-Z0-9_#]* ;
 STRING  : '"'(~["])*'"';
 INT     : 	(([0-9]+) |	([0-9]+('_'[0-9]+)*));
 REAL   	: (([0-9]+('.'[0-9]+)?) | '.'[0-9]+);