Fix unnecessary hash table creation in cl-prin1 (bug#36566)

Fix unnecessary hash table creation in cl-prin1 (bug#36566)

cl-prin1 prints all its punctuation by passing strings to prin1.  When
print-circle was set, print_preprocess was creating a new hash table
for each string, causing excessive garbage collection when printing
large Lisp objects with cl-prin1.

* src/print.c (print_number_index): Fix typo in comment above.
(PRINT_CIRCLE_CANDIDATE_P): Don't create print_number_table
for top-level strings with no properties, except when
print_continuous_numbering is on.