Add intended rewind for Blossom on testnet.

Signed-off-by: Daira Hopwood <daira@jacaranda.org>

src/main.cpp

@@ -4636,7 +4636,9 @@ bool RewindBlockIndex(const CChainParams& chainparams, bool& clearWitnessCaches)
         // This is true when we intend to do a long rewind.
         bool intendedRewind =
             (networkID == "test" && nHeight == 252500 && *phashFirstInsufValidated ==
-             uint256S("0018bd16a9c6f15795a754c498d2b2083ab78f14dae44a66a8d0e90ba8464d9c"));
+             uint256S("0018bd16a9c6f15795a754c498d2b2083ab78f14dae44a66a8d0e90ba8464d9c")) ||
+            (networkID == "test" && nHeight == 584000 && *phashFirstInsufValidated ==
+             uint256S("002e1d6daf4ab7b296e7df839dc1bee9d615583bb4bc34b1926ce78307532852"));
 
         clearWitnessCaches = (rewindLength > MAX_REORG_LENGTH && intendedRewind);