index: enable bip352 parallel sync

Author: furszy

src/index/bip352.h

@@ -62,6 +62,10 @@ class BIP352Index final : public BaseIndex
 
     bool CustomAppend(const interfaces::BlockInfo& block) override;
 
+    std::any CustomProcessBlock(const interfaces::BlockInfo& block) override {
+        return CustomAppend(block);
+    }
+
     BaseIndex::DB& GetDB() const override;
 public:
 
@@ -70,6 +74,8 @@ class BIP352Index final : public BaseIndex
     // Destructor is declared because this class contains a unique_ptr to an incomplete type.
     virtual ~BIP352Index() override;
 
+    bool AllowParallelSync() override { return true; }
+
     bool FindSilentPayment(const uint256& block_hash, tweak_index_entry& index_entry) const;
 };