JSON_SCHEMA_VALID returns wrong result for strange schema

[YangKeao]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

SELECT JSON_SCHEMA_VALID('{\"const\": false}', '{\"key\": null}');
SELECT JSON_SCHEMA_VALID('{\"$ref\": \"#/$defs/test\"}', '42');
SELECT JSON_SCHEMA_VALID('{\"contains\": {\"type\": \"string\"}};
SELECT JSON_SCHEMA_VALID('{\"propertyNames\": {\"pattern\": \"^A\"}}', '{\"abc\": 1}');
SELECT JSON_SCHEMA_VALID('{\"type\": \"number\", \"exclusiveMaximum\": 100}', '100');
SELECT JSON_SCHEMA_VALID('{\"dependentRequired\": {\"a\": [\"b\"]}}', '{\"a\": true}');

2. What did you expect to see? (Required)

Return 1

3. What did you see instead (Required)

Return 0.

4. What is your TiDB version? (Required)