[BUG] GpuJsonTuple memory leak

[gerashegalov]

SPARK_HOME=~/dist/spark-3.1.1-bin-hadoop3.2  \
JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64 \
TEST_PARALLEL=0 \
COVERAGE_SUBMIT_FLAGS="-Dai.rapids.refcount.debug=true" \
TZ= ./integration_tests/run_pyspark_from_build.sh -k test_json_tuple_select_non_generator_col -s |& tee build.log

which is already responsible for 20 Leaked buffers . It reproduces on my laptop and desktop GPU, so pretty sure it's on the CI log and would have been caught by #6947 had it already been implemented.

Originally posted by @gerashegalov in #9974 (comment)

[gerashegalov]

FIxed by #10403