Java bindings for mixed types as strings - #8

Fixes call to `data_type{}` ctor in `json_test.cpp`. The 2-parameter ctor is for fixed-point-types only and will assert in a debug build if used incorrectly: https://github.com/rapidsai/cudf/blob/2db58d58b4a986c2c6fad457f291afb1609fd458/cpp/include/cudf/types.hpp#L277-L280

Partial stack trace from a gdb run
```
#5  0x000077b1530bc71b in __assert_fail_base (fmt=0x77b153271130 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n",
    assertion=0x58c3e4baaa98 "id == type_id::DECIMAL32 || id == type_id::DECIMAL64 || id == type_id::DECIMAL128",
    file=0x58c3e4baaa70 "/cudf/cpp/include/cudf/types.hpp", line=279, function=<optimized out>) at ./assert/assert.c:92
#6  0x000077b1530cde96 in __GI___assert_fail (
    assertion=0x58c3e4baaa98 "id == type_id::DECIMAL32 || id == type_id::DECIMAL64 || id == type_id::DECIMAL128",
    file=0x58c3e4baaa70 "/cudf/cpp/include/cudf/types.hpp", line=279, function=0x58c3e4baaa38 "cudf::data_type::data_type(cudf::type_id, int32_t)")
    at ./assert/assert.c:101
#7  0x000058c3e48ba594 in cudf::data_type::data_type (this=0x7fffdd3f7530, id=cudf::type_id::STRING, scale=0) at /cudf/cpp/include/cudf/types.hpp:279
#8  0x000058c3e49215d9 in JsonReaderTest_MixedTypesWithSchema_Test::TestBody (this=0x58c3e5ea13a0) at /cudf/cpp/tests/io/json/json_test.cpp:2887

```

Authors:
  - David Wendt (https://github.com/davidwendt)

Approvers:
  - Karthikeyan (https://github.com/karthikeyann)
  - Muhammad Haseeb (https://github.com/mhaseeb123)

URL: NVIDIA#17273

As currently libcudf hides non-public symbols by default, stacktrace using C++ ABI `backtrace_symbols` no longer produces meaningful output. For example:
```
#0: gtests/STREAM_REDUCTION_TEST() [0x5bb586]
#1: gtests/STREAM_REDUCTION_TEST() [0x6a742d]
#2: gtests/STREAM_REDUCTION_TEST() [0x68a04e]
...
#8: /usr/lib64/libc.so.6 : __libc_start_main+0xe5
#9: gtests/STREAM_REDUCTION_TEST() [0x53419e]

unknown file: Failure
C++ exception with description "cudf_identify_stream_usage found unexpected stream!" thrown in the test body.
```

This PR removes completely the stacktrace generation code.

Closes NVIDIA#18831. Also closes NVIDIA#16724.

Authors:
  - Nghia Truong (https://github.com/ttnghia)
  - Vyas Ramasubramani (https://github.com/vyasr)

Approvers:
  - Vukasin Milovanovic (https://github.com/vuule)
  - Vyas Ramasubramani (https://github.com/vyasr)
  - Robert (Bobby) Evans (https://github.com/revans2)

URL: NVIDIA#19048