[Bug]: Panic on fairground

[wwestgarth]

Problem encountered

The below panic occurred on fairgraound:

Nov 26 12:13:45 n01.testnet.vega.rocks visor[3758517]: 2023-11-26T12:13:45.470Z        ERROR        tendermint        consensus/state.go:732        CONSENSUS FAILURE!!!        {"err": "cannot unregister order with potential sell + size change < 0", "stack": "goroutine 490 [running]:
runtime/debug.Stack()
    /opt/hostedtoolcache/go/1.20.11/x64/src/runtime/debug/stack.go:24 +0x65
github.com/tendermint/tendermint/consensus.(*State).receiveRoutine.func2()
    /home/runner/go/pkg/mod/github.com/vegaprotocol/cometbft@v0.34.29-patch.1/consensus/state.go:732 +0x4c
panic({0x31776e0, 0xc01e972ef0})
    /opt/hostedtoolcache/go/1.20.11/x64/src/runtime/panic.go:884 +0x213
go.uber.org/zap/zapcore.CheckWriteAction.OnWrite(0x2?, 0x2?, {0x0?, 0x0?, 0xc011debc40?})
    /home/runner/go/pkg/mod/go.uber.org/zap@v1.24.0/zapcore/entry.go:198 +0x65
go.uber.org/zap/zapcore.(*CheckedEntry).Write(0xc01987a270, {0xc014644f80, 0x2, 0x2})
    /home/runner/go/pkg/mod/go.uber.org/zap@v1.24.0/zapcore/entry.go:264 +0x3ec
go.uber.org/zap.(*Logger).Panic(0x2?, {0x3b55544?, 0x2?}, {0xc014644f80, 0x2, 0x2})
    /home/runner/go/pkg/mod/go.uber.org/zap@v1.24.0/logger.go:258 +0x59
code.vegaprotocol.io/vega/core/positions.(*MarketPosition).UpdateOnOrderChange(0xc0122f1090, 0xc00dba7860, 0x8881798?, 0xc034f3c360, 0x7ffffffffff0bdbf, 0x0)
    /home/runner/work/vega/vega/core/positions/market_position.go:106 +0x897
code.vegaprotocol.io/vega/core/positions.(*MarketPosition).UnregisterOrder(0x32a6bc0?, 0xc00dba7890?, 0xc021351200?)
    /home/runner/work/vega/vega/core/positions/market_position.go:75 +0x45
code.vegaprotocol.io/vega/core/positions.(*Engine).UnregisterOrder(0xc00db8af00, {0x41cfe50, 0xc0341c42d0}, 0xc01ced7ee0)
    /home/runner/work/vega/vega/core/positions/engine.go:239 +0x23c
code.vegaprotocol.io/vega/core/execution/future.(*Market).submitValidatedOrder(0xc00dbdc300, {0x41cfe50, 0xc0341c42d0}, 0xc01ced7ee0)
    /home/runner/work/vega/vega/core/execution/future/market.go:2074 +0xd5c
code.vegaprotocol.io/vega/core/execution/future.(*Market).submitOrder(0xc00dbdc300, {0x41cfe50, 0xc0341c42d0}, 0xc01ced7ee0)
    /home/runner/work/vega/vega/core/execution/future/market.go:1943 +0x24e
code.vegaprotocol.io/vega/core/execution/future.(*Market).SubmitOrderWithIDGeneratorAndOrderID(0xc00dbdc300, {0x41cfe50, 0xc0341c42d0}, 0xc012ccf500?, {0xc021351200, 0x40}, {0x419bec0?, 0xc01e30b128?}, {0xc014336d80, 0x40}, ...)
    /home/runner/work/vega/vega/core/execution/future/market.go:1906 +0x525
code.vegaprotocol.io/vega/core/execution.(*Engine).SubmitOrder(0xc0014c02c0, {0x41cfe50, 0xc0341c42d0}, 0xc01e670a20, {0xc021351200, 0x40}, {0x419bec0, 0xc01e30b128}, {0xc014336d80, 0x40})

Observed behaviour

Network panic when trying to close entire position.

Expected behaviour

Not network panic when trying to close entire position.

Steps to reproduce

1. Submit `xyz` transaction
2. With this payload
3. Query `abc` API
4. Observe the error

Software version

v0.73.6

Failing test

No response

Jenkins run

No response

Configuration used

No response

Relevant log output

No response