Extend non-isbits argument error text. #1429

Job	Run time
Julia 1.11 x86_64-linux-gnuassert	5m 25s
Julia 1.10 - ubuntu-latest - x64	2m 9s
Julia 1.11 x86_64-linux-gnuassert --opaque-pointers	5m 9s
Julia 1.10 - macOS-latest - x64	2m 21s
Julia 1.10 - windows-latest - x64	2m 40s
Julia pre - ubuntu-latest - x64	3m 32s
Julia pre - macOS-latest - x64	3m 35s
Julia pre - windows-latest - x64	4m 20s
Julia nightly - ubuntu-latest - x64	3m 21s
Julia nightly - macOS-latest - x64	3m 34s
Julia nightly - windows-latest - x64	4m 0s
Julia 1.10 --opaque-pointers - ubuntu-latest - x64	1m 56s
Julia 1.10 --opaque-pointers - macOS-latest - x64	2m 50s
Julia 1.10 --opaque-pointers - windows-latest - x64	2m 43s
Julia pre --opaque-pointers - ubuntu-latest - x64	3m 38s
Julia pre --opaque-pointers - macOS-latest - x64	3m 29s
Julia pre --opaque-pointers - windows-latest - x64	4m 27s
	59m 9s

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