Make `ContextCompat` consistent and non-ambiguous with `WrapErr` #415

Job	Run time
Miri	1m 36s
Check (stable)	23s
Rustfmt (stable)	16s
Clippy (stable)	29s
Test Suite	27s
Test Suite (stable)	1m 3s
Test Suite (--no-default-features)	53s
Test Suite (ubuntu-latest)	1m 2s
Test Suite (stable, --no-default-features)	58s
Test Suite (--no-default-features --features track-caller)	33s
Test Suite (windows-latest)	2m 19s
Test Suite (stable, --no-default-features --features track-caller)	58s
Test Suite (--no-default-features --features auto-install)	26s
Test Suite (macOS-latest)	1m 18s
Test Suite (stable, --no-default-features --features auto-install)	1m 0s
Test Suite (stable, --features pyo3)	1m 7s
Test Suite (stable, --all-features)	1m 8s
Test Suite (beta)	1m 5s
Test Suite (beta, --no-default-features)	54s
Test Suite (beta, --no-default-features --features track-caller)	59s
Test Suite (beta, --no-default-features --features auto-install)	55s
Test Suite (beta, --features pyo3)	1m 3s
Test Suite (beta, --all-features)	1m 6s
Test Suite (nightly)	1m 13s
Test Suite (nightly, --no-default-features)	1m 6s
Test Suite (nightly, --no-default-features --features track-caller)	1m 5s
Test Suite (nightly, --no-default-features --features auto-install)	1m 9s
Test Suite (nightly, --features pyo3)	1m 17s
Test Suite (nightly, --all-features)	1m 18s
	29m 6s

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