Fix GH-16665: \array and \callable should not be usable

This list was initially introduced in 53a40386, but never included array or
callable. I suppose this is because int & friends are

Fix GH-16665: \array and \callable should not be usable

This list was initially introduced in 53a40386, but never included array or
callable. I suppose this is because int & friends are not actual tokens,
while array and callable are. This means it was never possible to do class
array, which is probably the reason this was overlooked.

Closes GH-16683.

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