Consistently use `fmt::` when invoking `format_to`. #5253

Job	Run time
mingw (mingw64)	4m 28s
build (windows-2019, Win32, v142, 17, Debug)	1m 22s
mingw (ucrt64)	4m 20s
build (windows-2019, Win32, v142, 17, Release)	1m 50s
build (windows-2019, Win32, v142, 17, -DBUILD_SHARED_LIBS=ON, Debug)	1m 32s
build (windows-2019, Win32, v142, 17, -DBUILD_SHARED_LIBS=ON, Release)	1m 44s
build (windows-2019, x64, v140, 14, Debug)	1m 24s
build (windows-2019, x64, v140, 14, Release)	1m 41s
build (windows-2019, x64, v141, 17, Debug)	1m 25s
build (windows-2019, x64, v141, 17, Release)	2m 45s
build (windows-2019, x64, v142, 17, Debug)	1m 36s
build (windows-2019, x64, v142, 17, Release)	2m 4s
build (windows-2019, x64, v142, 17, -DBUILD_SHARED_LIBS=ON, Debug)	1m 18s
build (windows-2019, x64, v142, 17, -DBUILD_SHARED_LIBS=ON, Release)	1m 57s
build (windows-2019, x64, v142, 20, Debug)	1m 24s
build (windows-2019, x64, v142, 20, Release)	3m 1s
build (windows-2022, x64, v143, Debug, 20)	1m 27s
	35m 18s

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