Merge bitcoin#25121: test: compare /mempool/info response with getmempoolinfo RPC

1df42bc test: compare `/mempool/info` response with `getmempoolinfo` RPC (brunoerg)

Pull request description:

  This PRs compares `/mempool/info` REST response with `getmempoolinfo` RPC in `interface_rest.py`.
  Similar to bitcoin#24936 and bitcoin#24797.

ACKs for top commit:
  theStack:
    ACK 1df42bc

Tree-SHA512: 2de36d70fa61612e7976f875e55f98e78b1cdb909b48cff18e6a70c55eda34b799e210bcd55361ea947388b7778d867290a73be4f799bb36afd65423ad49c487

Author: MacroFake

test/functional/interface_rest.py

@@ -306,6 +306,9 @@ def run_test(self):
         # the size of the memory pool should be greater than 3x ~100 bytes
         assert_greater_than(json_obj['bytes'], 300)
 
+        mempool_info = self.nodes[0].getmempoolinfo()
+        assert_equal(json_obj, mempool_info)
+
         # Check that there are our submitted transactions in the TX memory pool
         json_obj = self.test_rest_request("/mempool/contents")
         raw_mempool_verbose = self.nodes[0].getrawmempool(verbose=True)