`getu` seems broken for `ArraySymbolic`

[hexaeder]

If getu(sys, sym::ArraySymbolic) with an ArraySymbolic, sym used to be collected. Now, it resolves the indices, idx = variable_indices(sys, sym) which, in my case, returns something like Int[1,2]. However this ends up as some _getp call

SymbolicIndexingInterface.jl/src/state_indexing.jl

Lines 242 to 245 in 82f1464

	ts_idxs = get_all_timeseries_indexes(sys, sym_arr)
	if !(ContinuousTimeseries() in ts_idxs)
	return getp(sys, sym)
	end

because sym_arr = [1,2] which is neither variable nor parameter of my inpr thus the timeseries idx do not contain ContinuousTimeseries().

Can be solved if get_all_timeseries_indexes(inpr, sym) returns Set([SII.ContinuousTimeseries()]) for random inputs (in this case: integers). But does this really make sense? For example, that's not how it is defined in SymbolCache, which just returns an empty set.

SymbolicIndexingInterface.jl/src/symbol_cache.jl

Lines 141 to 149 in 82f1464

	function get_all_timeseries_indexes(sc::SymbolCache, sym)
	if is_variable(sc, sym) || is_independent_variable(sc, sym)
	return Set([ContinuousTimeseries()])
	elseif is_timeseries_parameter(sc, sym)
	return Set([timeseries_parameter_index(sc, sym).timeseries_idx])
	else
	return Set()
	end
	end