perf: check LE/BE to use ByteOrder

[kraity]

What this PR does / why we need it?

check LE/BE to use ByteOrder

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.

[codecov-commenter]

Codecov Report

Merging #578 (9218295) into main (1039d92) will increase coverage by 0.00%.
The diff coverage is 5.88%.

@@            Coverage Diff            @@
##               main     #578   +/-   ##
=========================================
  Coverage     73.24%   73.24%           
+ Complexity    13248    13245    -3     
=========================================
  Files           587      587           
  Lines         58411    58396   -15     
  Branches      12176    12173    -3     
=========================================
- Hits          42781    42775    -6     
+ Misses        10737    10733    -4     
+ Partials       4893     4888    -5     

Impacted Files	Coverage Δ
...in/java/com/alibaba/fastjson2/JSONReaderJSONB.java	70.36% <0.00%> (ø)
...in/java/com/alibaba/fastjson2/JSONWriterJSONB.java	79.78% <0.00%> (ø)
...main/java/com/alibaba/fastjson2/util/JDKUtils.java	72.72% <0.00%> (+3.16%)	⬆️
...ain/java/com/alibaba/fastjson2/util/JSONBDump.java	64.84% <0.00%> (ø)
...n/java/com/alibaba/fastjson2/util/UnsafeUtils.java	71.01% <100.00%> (ø)
...n/java/com/alibaba/fastjson2/JSONWriterPretty.java	100.00% <0.00%> (ø)
...java/com/alibaba/fastjson2/writer/FieldWriter.java	62.93% <0.00%> (+0.38%)	⬆️

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