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GH-28994: [C++][JSON] Change the max rows to Unlimited(int_32)  (#38582)


### Rationale for this change
Unlimited parse max rows for parse json block. Raise `Row count overflowed int32_t` error when the loop times out of `init_32::max()`.

See issue: #28994

### What changes are included in this PR?
Delete const `kMaxParserNumRows`,  Minor code( C++ ) modifications and test code(python)

### Are these changes tested? Yes
New a test code for parse large (100100) rows json .

### Are there any user-facing changes?  No

* Closes: #28994

Lead-authored-by: zhipeng <zhipeng.py@gmail.com>
Co-authored-by: zhipeng <5310853+Ox0400@users.noreply.github.com>
Signed-off-by: Benjamin Kietzman <bengilgit@gmail.com>