spa pod builder/parser macros: Fix recursive macro usage
Prepends the $crate path to recursive macro invocations so that the expanded code has the proper path to the macro.
Otherwise, the macro will not compile without it being directly in scope.
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Prepends the $crate path to recursive macro invocations so that the expanded code has the proper path to the macro.
Otherwise, the macro will not compile without it being directly in scope.