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Store and restore "failed" configuration if `init` step aborts #304

Job	Run time
Per-language bundles (python, ubuntu-latest, nightly-latest)	48s
Per-language bundles (swift, macos-latest-xlarge, nightly-latest, autobuild)	7m 17s
Per-language bundles (java, ubuntu-latest, nightly-latest, none)	56s
Per-language bundles (cpp, ubuntu-latest, nightly-latest, manual, gcc -o main main.c)	50s
Per-language bundles (go, ubuntu-latest, nightly-latest, autobuild)	1m 2s
Per-language bundles (ruby, ubuntu-latest, nightly-latest)	35s
Per-language bundles (actions, ubuntu-latest, nightly-latest, actions javascript)	44s
Per-language bundles (csharp, ubuntu-latest, nightly-latest, none)	55s
Per-language bundles (rust, ubuntu-latest, nightly-latest)	1m 45s
Per-language bundles (javascript, ubuntu-latest, nightly-latest)	56s
	15m 48s