Make `ContextCompat` consistent and non-ambiguous with `WrapErr` #388

Job	Run time
Miri	1m 5s
Check (stable)	9s
Clippy (stable)	20s
Rustfmt (stable)	12s
Test Suite (stable)	29s
Test Suite	1m 3s
Test Suite (ubuntu-latest)	28s
Test Suite (stable, --no-default-features)	37s
Test Suite (windows-latest)	1m 54s
Test Suite (stable, --features track-caller)	46s
Test Suite (--no-default-features)	1m 0s
Test Suite (--features track-caller)	59s
Test Suite (stable, --features pyo3)	30s
Test Suite (macOS-latest)	45s
Test Suite (--features auto-install)	1m 6s
Test Suite (stable, --features auto-install)	31s
Test Suite (stable, --all-features)	30s
Test Suite (beta)	34s
Test Suite (beta, --no-default-features)	36s
Test Suite (beta, --features track-caller)	35s
Test Suite (beta, --features pyo3)	34s
Test Suite (beta, --features auto-install)	35s
Test Suite (beta, --all-features)	38s
Test Suite (nightly)	43s
Test Suite (nightly, --no-default-features)	43s
Test Suite (nightly, --features track-caller)	44s
Test Suite (nightly, --features pyo3)	46s
Test Suite (nightly, --features auto-install)	44s
Test Suite (nightly, --all-features)	47s
	20m 23s

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