add annotation tests for BITOR (#6232)

Author: fivetran-felixhuang

tests/fixtures/optimizer/annotate_functions.sql

@@ -1655,6 +1655,14 @@ INT;
 BIT_LENGTH(tbl.bin_col);
 INT;
 
+# dialect: snowflake
+BITOR(2, 4);
+INT;
+
+# dialect: snowflake
+BITOR(tbl.bin_col, tbl.bin_col);
+BINARY;
+
 # dialect: snowflake
 BITSHIFTLEFT(2, 1);
 INT;