TaintedUrlSuffix is currently only used in TaintTracking configs meaning it is already propagated
by taint steps. The inclusion of these taint steps here however meant that implicit reads could appear prior to any of these steps.
This was is problematic for PropRead steps as an expression like x[0] could spuriously read from array element 1 via the path:
x [element 1]
x [empty access path] (after implicit read)
x[0] (taint step through PropRead)