[EXEMPLAR] Update ExemplarFilter and ExemplarReservoir for spec #9402

Job	Run time
CMake clang 15 (maintainer mode, async)	9m 53s
CMake gcc 13 (maintainer mode, sync)	4m 25s
CMake gcc 13 (maintainer mode, async)	4m 15s
CMake clang 15 (maintainer mode, abiv2)	9m 36s
CMake test (without otlp-exporter)	4m 44s
Bazel asan config	1m 33s
Bazel noexcept	3m 36s
Bazel nortti	9m 26s
Bazel on MacOS	3m 33s
Bazel	9m 13s
Bazel with async export	8m 23s
Bazel tsan config	9m 47s
Bazel valgrind	9m 54s
Bazel with external abseil	4m 28s
Benchmark	1m 45s
CMake test (with abseil)	4m 16s
CMake clang 15 (maintainer mode, sync)	9m 24s
CMake do not install test (with otlp-exporter)	10m 21s
CMake install test (with abseil)	4m 11s
CMake test (with modern protobuf,grpc and abseil)	15m 37s
CMake msvc (maintainer mode)	5m 40s
CMake msvc (maintainer mode) with C++20	7m 34s
CMake test (with opentracing-shim)	2m 6s
CMake test (build shared libraries with otlp-exporter and static gRPC)	10m 40s
CMake test (with otlp-exporter)	11m 10s
CMake C++14 test(GCC)	3m 54s
CMake C++17 test(GCC)	4m 44s
CMake C++20 test(Clang with libc++)	3m 45s
CMake C++20 test(GCC)	4m 10s
CMake C++23 test(Clang with libc++)	3m 48s
CMake C++23 test(GCC)	3m 35s
CMake test (without otlp-exporter and with async export)	4m 38s
Copyright	5s
Format	21s
Plugin -> CMake	58s
CMake -> exporter proto	9m 2s
Bazel Windows	6m 22s
CMake (With async export) -> exporter proto	9m 11s
CMake -> exporter proto (Build as DLL)	30m 31s
Code coverage	3m 37s
DocFX check	1m 8s
markdown-lint	5s
misspell	4s
Plugin -> CMake Windows	5m 7s
	4h 30m 35s

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