[EXPORTER] Fix crash in ElasticsearchLogRecordExporter #10251

Job	Run time
CMake gcc 14 (maintainer mode, async)	12m 55s
CMake test (without otlp-exporter)	4m 43s
CMake test arm64 (with modern protobuf,grpc and abseil)	18m 1s
CMake clang 18 (maintainer mode, async)	9m 9s
CMake clang 18 (maintainer mode, abiv2)	8m 14s
CMake clang 18 (maintainer mode, sync)	8m 19s
CMake gcc 14 (maintainer mode, sync)	12m 30s
CMake msvc (maintainer mode)	7m 42s
CMake msvc (maintainer mode) with C++20	8m 21s
CMake test (with abseil)	4m 42s
CMake do not install test (with otlp-exporter)	14m 55s
CMake test (with modern protobuf,grpc and abseil)	17m 25s
CMake test (with opentracing-shim)	4m 15s
CMake test (build shared libraries with otlp-exporter and static gRPC)	14m 13s
CMake test (with otlp-exporter)	14m 57s
CMake C++14 test(GCC)	4m 12s
CMake C++17 test(GCC)	4m 40s
CMake C++20 test(Clang with libc++)	8m 44s
CMake C++20 test(GCC)	8m 53s
CMake C++23 test(Clang with libc++)	9m 1s
CMake C++23 test(GCC)	7m 55s
CMake test (without otlp-exporter and with async export)	4m 47s
Bazel asan config	19m 8s
Bazel without bzlmod	15m 14s
Bazel noexcept	16m 1s
Bazel nortti	15m 29s
Bazel on MacOS	12m 5s
Bazel	16m 9s
Bazel with async export	15m 33s
Bazel tsan config	16m 29s
Bazel valgrind	7m 38s
CMake install test (with abseil)	4m 39s
Plugin -> CMake	1m 4s
Benchmark	11m 52s
Code coverage	10m 45s
Copyright	7s
Format	16s
markdown-lint	8s
shellcheck	5s
CMake -> exporter proto	12m 44s
Bazel Windows	35m 56s
Plugin -> CMake Windows	6m 38s
CMake (With async export) -> exporter proto	12m 34s
CMake -> exporter proto (Build as DLL)	19m 45s
DocFX check	54s
misspell	4s
	7h 39m 50s

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