Feature: re-enable non-halting RTT on a few targets #2940

Job	Run time
build-macos (macos-13)	46s
build-macos (macos-13, gcc@11)	1m 23s
build-macos (macos-14)	26s
build-linux (jammy, 96b_carbon)	48s
build-macos (macos-13, gcc@12)	59s
build-macos (macos-latest)	23s
build-mingw (windows-2022, mingw64)	1m 44s
build-linux (jammy, blackpill-f401cc)	39s
build-macos (macos-13, gcc@13)	1m 5s
build-mingw (windows-2022, ucrt64)	1m 52s
build-linux (jammy, blackpill-f401ce)	1m 6s
build-macos (macos-13, gcc@14)	1m 11s
build-mingw (windows-2022, clang64)	1m 49s
build-linux (jammy, blackpill-f411ce)	52s
build-msvc (meson, windows-2022)	1m 5s
build-macos (macos-14, gcc@11)	50s
build-linux (jammy, bluepill)	31s
build-macos (macos-14, gcc@12)	45s
build-macos (macos-14, gcc@13)	43s
build-linux (jammy, ctxlink)	35s
size-diff	38s
build-macos (macos-14, gcc@14)	46s
build-linux (jammy, f072)	51s
build-linux (jammy, f3)	43s
build-linux (jammy, f4discovery)	38s
build-linux (jammy, hydrabus)	44s
build-linux (jammy, launchpad-icdi)	41s
build-linux (jammy, native)	41s
build-linux (jammy, native-uncommon)	43s
build-linux (jammy, native-st-clones)	42s
build-linux (jammy, native-riscv)	41s
build-linux (jammy, native-remote)	1m 5s
build-linux (jammy, stlink)	34s
build-linux (jammy, stlinkv3)	31s
build-linux (jammy, swlink)	37s
	30m 7s

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