fix: array_tail function did not work with integer type

[RC-002]

The array_tail function did not work with the integer data type. I tested this with a simple query.

• Before:

  select tail(ARRAY[12,13,14,15,16]);
              tail                
  ------------------------------------
  {13,893267336,893267340,893267344}
  (1 row)

• After:

  
  select tail(ARRAY[12,13,14,15,16]);
   tail      
  ---------------
  {13,14,15,16}
  (1 row)

select tail(ARRAY['I','hope', null, null, 'this','works']); tail

{hope,NULL,NULL,this,works} (1 row)

[RC-002]

The same changes were merged in another PR