Make `ContextCompat` consistent and non-ambiguous with `WrapErr` #375

Job	Run time
Check (stable)	16s
Rustfmt (stable)	11s
Miri	1m 2s
Clippy (stable)	28s
Test Suite (stable)	29s
Test Suite (ubuntu-latest)	30s
Test Suite (stable, --no-default-features)	1s
Test Suite	2m 36s
Test Suite (windows-latest)	2m 47s
Test Suite (stable, --features track-caller)	12s
Test Suite (--no-default-features)	2m 32s
Test Suite (macOS-latest)	57s
Test Suite (stable, --features pyo3)	29s
Test Suite (--features track-caller)	2m 36s
Test Suite (stable, --features auto-install)	29s
Test Suite (--features auto-install)	2m 51s
Test Suite (stable, --all-features)	29s
Test Suite (beta)	31s
Test Suite (beta, --no-default-features)	24s
Test Suite (beta, --features track-caller)	28s
Test Suite (beta, --features pyo3)	28s
Test Suite (beta, --features auto-install)	31s
Test Suite (beta, --all-features)	30s
Test Suite (nightly)	28s
Test Suite (nightly, --no-default-features)	25s
Test Suite (nightly, --features track-caller)	50s
Test Suite (nightly, --features pyo3)	30s
Test Suite (nightly, --features auto-install)	29s
Test Suite (nightly, --all-features)	29s
	24m 58s

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