Make `ContextCompat` consistent and non-ambiguous with `WrapErr` #389

Job	Run time
Rustfmt (stable)	4s
Check (stable)	10s
Clippy (stable)	24s
Miri	1m 3s
Test Suite	1m 4s
Test Suite (ubuntu-latest)	34s
Test Suite (--no-default-features)	1m 1s
Test Suite (stable)	28s
Test Suite (windows-latest)	2m 1s
Test Suite (--features track-caller)	1m 0s
Test Suite (stable, --no-default-features)	29s
Test Suite (macOS-latest)	48s
Test Suite (--features auto-install)	58s
Test Suite (stable, --features track-caller)	33s
Test Suite (stable, --features pyo3)	29s
Test Suite (stable, --features auto-install)	41s
Test Suite (stable, --all-features)	32s
Test Suite (beta)	35s
Test Suite (beta, --no-default-features)	36s
Test Suite (beta, --features track-caller)	32s
Test Suite (beta, --features pyo3)	34s
Test Suite (beta, --features auto-install)	36s
Test Suite (beta, --all-features)	34s
Test Suite (nightly)	44s
Test Suite (nightly, --no-default-features)	49s
Test Suite (nightly, --features track-caller)	44s
Test Suite (nightly, --features pyo3)	48s
Test Suite (nightly, --features auto-install)	45s
Test Suite (nightly, --all-features)	44s
	20m 20s

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