[BUILD] Fix multiple assignment operators for SpinLockMutex (#2501) #9080

Job	Run time
CMake clang 14 (maintainer mode, sync)	14m 7s
Bazel	12m 27s
CMake test (with abseil)	4m 23s
Bazel with async export	12m 29s
CMake test (without otlp-exporter)	4m 44s
CMake clang 14 (maintainer mode, abiv2)	13m 51s
CMake clang 14 (maintainer mode, async)	13m 59s
CMake do not install test (with otlp-exporter)	14m 32s
CMake gcc 12 (maintainer mode, async)	7m 49s
CMake gcc 12 (maintainer mode, sync)	8m 13s
CMake install test (with abseil)	4m 42s
CMake test (with modern protobuf,grpc and abseil)	19m 6s
CMake msvc (maintainer mode)	7m 28s
CMake msvc (maintainer mode) with C++20	9m 18s
CMake test (with opentracing-shim)	4m 25s
CMake test (build shared libraries with otlp-exporter and static gRPC)	13m 46s
CMake test (with otlp-exporter)	14m 14s
CMake C++14 test(GCC)	4m 4s
CMake C++17 test(GCC)	4m 54s
CMake C++20 test(Clang with libc++)	9m 15s
CMake C++20 test(GCC)	8m 28s
CMake C++23 test(Clang with libc++)	9m 15s
CMake C++23 test(GCC)	8m 42s
CMake test (without otlp-exporter and with async export)	4m 41s
Plugin -> CMake	54s
Bazel asan config	15m 25s
Bazel noexcept	12m 16s
Bazel nortti	12m 33s
Bazel on MacOS	34m 57s
Bazel tsan config	13m 16s
Bazel valgrind	14m 26s
Bazel with external abseil	12m 54s
Benchmark	7m 42s
Copyright	4s
Format	12s
CMake -> exporter proto	12m 17s
Bazel Windows	23m 26s
Plugin -> CMake Windows	6m 23s
CMake (With async export) -> exporter proto	12m 26s
CMake -> exporter proto (Build as DLL)	25m 54s
Code coverage	12m 16s
DocFX check	1m 4s
markdown-lint	14s
misspell	4s
	7h 27m 35s

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