Fix 2759 and 2640 naming

[Cooper-Zhong]

What this PR does / why we need it?

fix fastjson 1.x jsonpath compatible api return fastjson 2 JSONObject and JSONArrary, for #2759
fix naming for Issue2640 test

Summary of your change

Please indicate you've done the following:

• Made sure tests are passing and test coverage is added if needed.
• Made sure commit message follow the rule of Conventional Commits specification.
• Considered the docs impact and opened a new docs issue or PR with docs changes if needed.