DCC conjecture for volumes of RDP orbifold pairs

Let $(X,C)$ be an orbifold pair on a rational double point, with boundary

$$C=\sum_i (1/n_i)C_i.$$

DCC conjecture. The set of volumes of these orbifold pairs satisfies the descending chain condition, and its minimum nonzero value is

$$1/3528=1/(2\cdot 42^2).$$

This is the proposed restriction to Gorenstein log terminal surface singularities after examples show that volumes of general Gorenstein orbifold pairs can form a strictly decreasing sequence. The supplied context does not state whether the claim has been proved or disproved.