[BugFix] Fix the mem_leak of regex_replace (#24475)

[trueeyu]

Fixes #issue

mysql> SELECT regexp_replace('a b c', " ", "-");
+-----------------------------------+
| regexp_replace('a b c', ' ', '-') |
+-----------------------------------+
| a-b-c                             |
+-----------------------------------+
1 row in set (0.01 sec)

Direct leak of 2319 byte(s) in 1 object(s) allocated from:
    #0 0x974c2af in __interceptor_malloc ../../.././libsanitizer/asan/asan_malloc_linux.cpp:145
    #1 0x14bdb529 in alloc_scratch /root/starrocks/thirdparty/src/hyperscan-5.4.0/src/scratch.c:121
    #2 0x14bdbb3f in hs_clone_scratch /root/starrocks/thirdparty/src/hyperscan-5.4.0/src/scratch.c:399
    #3 0x12d4f791 in regexp_replace_use_hyperscan /root/starrocks/be/src/exprs/string_functions.cpp:2846
    #4 0x12d5044a in starrocks::StringFunctions::regexp_replace(starrocks::FunctionContext*, std::vector<std::shared_ptr<starrocks::Column>, std::allocator<std::shared_ptr<starrocks::Column> > > const&) /root/starrocks/be/src/exprs/string_functions.cpp:2913
    #5 0xec8af37 in starrocks::VectorizedFunctionCallExpr::evaluate_checked(starrocks::ExprContext*, starrocks::Chunk*) /root/starrocks/be/src/exprs/function_call_expr.cpp:159
    #6 0xd924e9b in starrocks::ExprContext::evaluate(starrocks::Expr*, starrocks::Chunk*, unsigned char*) /root/starrocks/be/src/exprs/expr_context.cpp:176
    #7 0xd9246dc in starrocks::ExprContext::evaluate(starrocks::Chunk*, unsigned char*) /root/starrocks/be/src/exprs/expr_context.cpp:160
    #8 0xab4f521 in starrocks::pipeline::ProjectOperator::push_chunk(starrocks::RuntimeState*, std::shared_ptr<starrocks::Chunk> const&) /root/starrocks/be/src/exec/pipeline/project_operator.cpp:55
    #9 0x9c9ec7c in starrocks::pipeline::PipelineDriver::process(starrocks::RuntimeState*, int) /root/starrocks/be/src/exec/pipeline/pipeline_driver.cpp:320
    #10 0x12a59131 in starrocks::pipeline::GlobalDriverExecutor::_worker_thread() /root/starrocks/be/src/exec/pipeline/pipeline_driver_executor.cpp:154
    #11 0x12a57871 in operator() /root/starrocks/be/src/exec/pipeline/pipeline_driver_executor.cpp:69
    #12 0x12a61555 in __invoke_impl<void, starrocks::pipeline::GlobalDriverExecutor::initialize(int)::<lambda()>&> /opt/gcc/usr/include/c++/10.3.0/bits/invoke.h:60
    #13 0x12a60a5a in __invoke_r<void, starrocks::pipeline::GlobalDriverExecutor::initialize(int)::<lambda()>&> /opt/gcc/usr/include/c++/10.3.0/bits/invoke.h:110
    #14 0x12a5fd64 in _M_invoke /opt/gcc/usr/include/c++/10.3.0/bits/std_function.h:291
    #15 0x98e2d87 in std::function<void ()>::operator()() const /opt/gcc/usr/include/c++/10.3.0/bits/std_function.h:622
    #16 0x1172d057 in starrocks::FunctionRunnable::run() /root/starrocks/be/src/util/threadpool.cpp:58
    #17 0x11729e0c in starrocks::ThreadPool::dispatch_thread() /root/starrocks/be/src/util/threadpool.cpp:553
    #18 0x11745a65 in void std::__invoke_impl<void, void (starrocks::ThreadPool::*&)(), starrocks::ThreadPool*&>(std::__invoke_memfun_deref, void (starrocks::ThreadPool::*&)(), starrocks::ThreadPool*&) /opt/gcc/usr/include/c++/10.3.0/bits/invoke.h:73
    #19 0x117453be in std::__invoke_result<void (starrocks::ThreadPool::*&)(), starrocks::ThreadPool*&>::type std::__invoke<void (starrocks::ThreadPool::*&)(), starrocks::ThreadPool*&>(void (starrocks::ThreadPool::*&)(), starrocks::ThreadPool*&) /opt/gcc/usr/include/c++/10.
3.0/bits/invoke.h:95
    #20 0x117447b5 in void std::_Bind<void (starrocks::ThreadPool::*(starrocks::ThreadPool*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) /opt/gcc/usr/include/c++/10.3.0/functional:416
    #21 0x11743117 in void std::_Bind<void (starrocks::ThreadPool::*(starrocks::ThreadPool*))()>::operator()<, void>() /opt/gcc/usr/include/c++/10.3.0/functional:499
    #22 0x1174017b in void std::__invoke_impl<void, std::_Bind<void (starrocks::ThreadPool::*(starrocks::ThreadPool*))()>&>(std::__invoke_other, std::_Bind<void (starrocks::ThreadPool::*(starrocks::ThreadPool*))()>&) /opt/gcc/usr/include/c++/10.3.0/bits/invoke.h:60
    #23 0x1173dadf in std::enable_if<is_invocable_r_v<void, std::_Bind<void (starrocks::ThreadPool::*(starrocks::ThreadPool*))()>&>, void>::type std::__invoke_r<void, std::_Bind<void (starrocks::ThreadPool::*(starrocks::ThreadPool*))()>&>(std::_Bind<void (starrocks::ThreadP
ool::*(starrocks::ThreadPool*))()>&) /opt/gcc/usr/include/c++/10.3.0/bits/invoke.h:110
    #24 0x11739b48 in std::_Function_handler<void (), std::_Bind<void (starrocks::ThreadPool::*(starrocks::ThreadPool*))()> >::_M_invoke(std::_Any_data const&) /opt/gcc/usr/include/c++/10.3.0/bits/std_function.h:291
    #25 0x98e2d87 in std::function<void ()>::operator()() const /opt/gcc/usr/include/c++/10.3.0/bits/std_function.h:622
    #26 0x11711bc8 in starrocks::Thread::supervise_thread(void*) /root/starrocks/be/src/util/thread.cpp:364
    #27 0x7fc585af0ea4 in start_thread (/lib64/libpthread.so.0+0x7ea4)