feature: improve context err #2062

Job	Run time
Bench - nightly toolchain (recent)	55s
Embedded	1m 35s
Docs - nightly toolchain (recent)	26s
Format - nightly toolchain	14s
Lint - nightly toolchain (recent)	29s
Integration tests - stable toolchain (26_0)	1m 3s
Docs - stable toolchain (recent)	26s
Integration tests - stable toolchain (25_2)	1m 11s
Test - 1.63.0 toolchain (minimal)	24m 50s
Test - nightly toolchain (minimal)	14m 35s
Integration tests - stable toolchain (25_1)	58s
Test - nightly toolchain (recent)	14m 7s
Test - stable toolchain (minimal)	16m 9s
Integration tests - stable toolchain (25_0)	1m 4s
Test - 1.63.0 toolchain (recent)	24m 59s
Test - stable toolchain (recent)	15m 56s
Integration tests - stable toolchain (24_2)	1m 14s
Integration tests - stable toolchain (24_1)	54s
Integration tests - stable toolchain (24_0_1)	56s
Integration tests - stable toolchain (23_2)	54s
Integration tests - stable toolchain (23_1)	53s
Integration tests - stable toolchain (23_0)	55s
Integration tests - stable toolchain (22_1)	57s
Integration tests - stable toolchain (22_0)	1m 1s
Integration tests - stable toolchain (0_21_2)	1m 6s
Integration tests - stable toolchain (0_20_2)	1m 8s
Integration tests - stable toolchain (0_19_1)	1m 2s
Integration tests - stable toolchain (0_18_1)	55s
Integration tests - stable toolchain (0_17_1)	54s
	2h 11m 46s

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