no signal callbacks can fire on the ScatterplotPlugin object while it… #757

Job	Run time
prepare_matrix	6s
Cross platform build (Windows-msvc2022, windows-2022, msvc-2022, 17, MD, Release)	7m 35s
Cross platform build (Macos_xcode16, macos-15, apple-clang, 16, Release, Macos, 16.2, libc++, armv8)	7m 11s
Cross platform build (Linux_gcc13, ubuntu-24.04, gcc, g++, gcc, 13, Release, Linux, libstdc++11, ...	5m 39s
	20m 31s

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