Merge bitcoin/bitcoin#32654: init: make -blockmaxweight startup option debug only

e017ef3 init: make `-blockmaxweight` startup option debug-only (ismaelsadeeq)

Pull request description:

  This PR updates `-blockmaxweight` startup option to be debug-only so that it will be hidden from help text.

  The option is currently unlikely to be used on mainnet, after the addition of the new `blockreservedweight` option. however it can be useful for test and signet network see bitcoin/bitcoin#32654 (comment)

ACKs for top commit:
  Sjors:
    tACK e017ef3
  fjahr:
    ACK e017ef3
  polespinasa:
    tACK e017ef3

Tree-SHA512: 6c18781826b2f96b13b70b7f1624481f5971746a613079d0d9528366f274ba657a02611f134d7a64f35ecb7e5faf2e3cd025458b04574ac68f804372f6eb715f

Author: glozow

src/init.cpp

@@ -660,7 +660,7 @@ void SetupServerArgs(ArgsManager& argsman, bool can_listen_ipc)
     argsman.AddArg("-whitelistrelay", strprintf("Add 'relay' permission to whitelisted peers with default permissions. This will accept relayed transactions even when not relaying transactions (default: %d)", DEFAULT_WHITELISTRELAY), ArgsManager::ALLOW_ANY, OptionsCategory::NODE_RELAY);
 
 
-    argsman.AddArg("-blockmaxweight=<n>", strprintf("Set maximum BIP141 block weight (default: %d)", DEFAULT_BLOCK_MAX_WEIGHT), ArgsManager::ALLOW_ANY, OptionsCategory::BLOCK_CREATION);
+    argsman.AddArg("-blockmaxweight=<n>", strprintf("Set maximum BIP141 block weight (default: %d)", DEFAULT_BLOCK_MAX_WEIGHT), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::BLOCK_CREATION);
     argsman.AddArg("-blockreservedweight=<n>", strprintf("Reserve space for the fixed-size block header plus the largest coinbase transaction the mining software may add to the block. (default: %d).", DEFAULT_BLOCK_RESERVED_WEIGHT), ArgsManager::ALLOW_ANY, OptionsCategory::BLOCK_CREATION);
     argsman.AddArg("-blockmintxfee=<amt>", strprintf("Set lowest fee rate (in %s/kvB) for transactions to be included in block creation. (default: %s)", CURRENCY_UNIT, FormatMoney(DEFAULT_BLOCK_MIN_TX_FEE)), ArgsManager::ALLOW_ANY, OptionsCategory::BLOCK_CREATION);
     argsman.AddArg("-blockversion=<n>", "Override block version to test forking scenarios", ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::BLOCK_CREATION);