Allow signal entry bid-ask spread filter

If you check Allow signal override next to the Entry bid-ask spread filter amount / Entry bid-ask spread filter percent controls, then bidAskSpreadFilter (dollar amount) or bidAskSpreadFilterPercent (percent) in the webhook (when present) is used as the entry spread cap for that signal. Only one of the two keys may be sent in the same payload. If neither is present, the Entry bid-ask spread filter amount or Entry bid-ask spread filter percent saved on the strategy or subscription is used (whichever mode is selected there).

Checking the global Allow signal overrides automatically checks every per-field Allow signal override checkbox (including the one next to the Entry bid-ask spread filter amount / Entry bid-ask spread filter percent controls), so both keys are honored for entry planning.

Example using a dollar amount:

{
    "ticker": "AAPL",
    "action": "buy",
    "orderType": "limit",
    "limitPrice": 150,
    "bidAskSpreadFilter": 0.02
}

Example using a percent:

{
    "ticker": "AAPL",
    "action": "buy",
    "orderType": "limit",
    "limitPrice": 150,
    "bidAskSpreadFilterPercent": 0.5
}