[ox_core] isDead can only be an integer

[thaibossaw]

Currently, ND_Ambulance sets the player state value for isDead to "eliminated" or "knocked", however this is incompatible with ox_core's SQL schema and results in errors within the server log such as the following:

05:21:46 PM ║              STDERR║ (node:4620) UnhandledPromiseRejectionWarning: SqlError: (conn:490, no: 1366, SQLState: 22007) Incorrect integer value: 'knocked' for column `ox_core`.`characters`.`isDead` at row 1
05:21:46 PM ║              STDERR║ sql: UPDATE characters SET x = ?, y = ?, z = ?, heading = ?, isDead = ?, lastPlayed = CURRENT_TIMESTAMP(), health = ?, armour = ?, statuses = ? WHERE charId = ? - parameters:[240.56703186035156,-1378.786865234375,32.91943359375,39.68503952026367,'knocked',0,0,'...
05:21:46 PM ║              STDERR║     at module2.exports.createError (@ox_core/dist/server.js:2494:14)
05:21:46 PM ║              STDERR║     at _PacketNodeEncoded.readError (@ox_core/dist/server.js:3036:23)
05:21:46 PM ║              STDERR║     at Execute.readResponsePacket (@ox_core/dist/server.js:13277:32)
05:21:46 PM ║              STDERR║     at PacketInputStream.receivePacketBasic (@ox_core/dist/server.js:8663:13)
05:21:46 PM ║              STDERR║     at PacketInputStream.onData (@ox_core/dist/server.js:8707:24)
05:21:46 PM ║              STDERR║     at Socket.emit (node:events:518:28)
05:21:46 PM ║              STDERR║     at addChunk (node:internal/streams/readable:561:12)
05:21:46 PM ║              STDERR║     at readableAddChunkPushByteMode (node:internal/streams/readable:512:3)
05:21:46 PM ║              STDERR║     at Readable.push (node:internal/streams/readable:392:5)
05:21:46 PM ║              STDERR║     at TCP.onStreamRead (node:internal/stream_base_commons:189:23)
05:21:46 PM ║              STDERR║ (node:4620) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 8)