test: rename CBlockHeader .hash -> .hash_hex for consistency

Note that we unfortunately can't use a scripted diff here, as the
`.hash` symbol is also used for other instances (e.g. CInv).

test/functional/feature_taproot.py

@@ -1341,9 +1341,9 @@ class TaprootTest(BitcoinTestFramework):
         if err_msg is not None:
             assert block_response is not None and err_msg in block_response, "Missing error message '%s' from block response '%s': %s" % (err_msg, "(None)" if block_response is None else block_response, msg)
         if accept:
-            assert node.getbestblockhash() == block.hash, "Failed to accept: %s (response: %s)" % (msg, block_response)
+            assert node.getbestblockhash() == block.hash_hex, "Failed to accept: %s (response: %s)" % (msg, block_response)
             self.tip = block.hash_int
-            self.lastblockhash = block.hash
+            self.lastblockhash = block.hash_hex
             self.lastblocktime += 1
             self.lastblockheight += 1
         else: