@Const macro raises an error if using `import KernelAbstractions`

[Hamiltonian-Action]

As the title suggests, there is a behaviour discrepancy between import KernelAbstractions and using KernelAbstractions in relation to the @Const macro. The following minimum example demonstrates the issue.

import KernelAbstractions as KA

KA.@kernel function example(KA.@Const(x)) end
# OUTPUT:
# ERROR: LoadError: MethodError: no method matching var"@Const"(::LineNumberNode, ::Module, ::Symbol)
# The function `@Const` exists, but no method is defined for this combination of argument types.

using KernelAbstractions: @Const
KA.@kernel function example(@Const(x)) end
# OUTPUT:
# example (generic function with 4 methods)

A brief search indicates that the issue almost certainly originates from these lines which compare to the literal value Symbol("@Const").