[fix](jni)fix jni use timezone_obj get timezone be core. (apache#41956)

This PR apache#40225 try to pass time zone info from BE to JNI, and it use
`_state->timezone_obj().name()`
to get the timezone name.
But when we do some rolling upgrade of BE, it may coredump like:

```
*** SIGSEGV address not mapped to object (@0x610) received by PID 72661 (TID 73538 OR 0x7f2e898d1640) from PID 1552; stack trace: ***
 0# doris::signal::(anonymous namespace)::FailureSignalHandler(int, siginfo_t*, void*) at /home/zcp/repo_center/doris_branch-2.1/doris/be/src/common/signal_handler.h:421
 1# os::Linux::chained_handler(int, siginfo_t*, void*) in /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/server/libjvm.so
 2# JVM_handle_linux_signal in /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/server/libjvm.so
 3# signalHandler(int, siginfo_t*, void*) in /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/server/libjvm.so
 4# 0x00007F3070D3E520 in /lib/x86_64-linux-gnu/libc.so.6
 5# cctz::time_zone::name[abi:cxx11]() const in /mnt/hdd01/ci/compatibility-deploy/be/lib/doris_be
 6# doris::vectorized::JniConnector::open(doris::RuntimeState*, doris::RuntimeProfile*) at /home/zcp/repo_center/doris_branch-2.1/doris/be/src/vec/exec/jni_connector.cpp:87
 7# doris::vectorized::AvroJNIReader::init_fetch_table_schema_reader() at /home/zcp/repo_center/doris_branch-2.1/doris/be/src/vec/exec/format/avro/avro_jni_reader.cpp:119
 8# std::_Function_handler::_M_invoke(std::_Any_data const&) at /var/local/ldb-toolchain/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/std_function.h:291
 9# doris::WorkThreadPool::work_thread(int) at /home/zcp/repo_center/doris_branch-2.1/doris/be/src/util/work_thread_pool.hpp:159
10# execute_native_thread_routine at ../../../../../libstdc++-v3/src/c++11/thread.cc:84
11# start_thread at ./nptl/pthread_create.c:442
12# 0x00007F3070E22850 at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:83
172.20.50.206 last coredump sql: 2024-10-13 04:12:23,985 [query] 
```

This PR use another method: `_state->timezone()`, which just return a
string, instead of reading and initializing
time zone info file, to avoid potential coredump.

be/src/vec/exec/jni_connector.cpp

@@ -84,7 +84,7 @@ Status JniConnector::open(RuntimeState* state, RuntimeProfile* profile) {
         return Status::InternalError("Failed to get/create JVM");
     }
     SCOPED_TIMER(_open_scanner_time);
-    _scanner_params.emplace("time_zone", _state->timezone_obj().name());
+    _scanner_params.emplace("time_zone", _state->timezone());
     RETURN_IF_ERROR(_init_jni_scanner(env, batch_size));
     // Call org.apache.doris.common.jni.JniScanner#open
     env->CallVoidMethod(_jni_scanner_obj, _jni_scanner_open);

regression-test/suites/external_table_p2/maxcompute/test_external_catalog_maxcompute.groovy

@@ -320,8 +320,8 @@
 suite("test_external_catalog_maxcompute", "p2,external,maxcompute,external_remote,external_remote_maxcompute") {
     String enabled = context.config.otherConfigs.get("enableMaxComputeTest")
     if (enabled != null && enabled.equalsIgnoreCase("true")) {
-        String ak = context.config.otherConfigs.get("aliYunAk")
-        String sk = context.config.otherConfigs.get("aliYunSk");
+        String ak = context.config.otherConfigs.get("ak")
+        String sk = context.config.otherConfigs.get("sk");
         String mc_db = "mc_datalake"
         String mc_catalog_name = "test_external_mc_catalog"
 

regression-test/suites/external_table_p2/maxcompute/test_max_compute_all_type.groovy

@@ -315,8 +315,8 @@ select * from mc_all_types;
 suite("test_max_compute_all_type", "p2,external,maxcompute,external_remote,external_remote_maxcompute") {
     String enabled = context.config.otherConfigs.get("enableMaxComputeTest")
     if (enabled != null && enabled.equalsIgnoreCase("true")) {
-        String ak = context.config.otherConfigs.get("aliYunAk")
-        String sk = context.config.otherConfigs.get("aliYunSk")
+        String ak = context.config.otherConfigs.get("ak")
+        String sk = context.config.otherConfigs.get("sk")
         String mc_catalog_name = "test_max_compute_all_type"
         sql """drop catalog if exists ${mc_catalog_name} """
 

regression-test/suites/external_table_p2/maxcompute/test_max_compute_complex_type.groovy

@@ -160,8 +160,8 @@
 suite("test_max_compute_complex_type", "p2,external,maxcompute,external_remote,external_remote_maxcompute") {
     String enabled = context.config.otherConfigs.get("enableMaxComputeTest")
     if (enabled != null && enabled.equalsIgnoreCase("true")) {
-        String ak = context.config.otherConfigs.get("aliYunAk")
-        String sk = context.config.otherConfigs.get("aliYunSk")
+        String ak = context.config.otherConfigs.get("ak")
+        String sk = context.config.otherConfigs.get("sk")
         String mc_catalog_name = "test_max_compute_complex_type"
         sql """drop catalog if exists ${mc_catalog_name} """
         sql """