Omission of `_refreshVirtualPoolValue()` causes stale fees and PLP price

The _payout() function in PositionInteractionFacet updates pool balances but fails to update the virtual pool state and emit updated PLP pricing. This leads to stale virtual pool values used in dynamic fee calculations and outdated PLP price reporting.

The issue occurs because:

1. Pool balance changes in _payout(): poolAmount[pos.uAsset] and/or poolAmount[pos.buyToken], affect total pool value.

2. Stale virtualNetPoolValue values affect dynamic fee application:

function _calcFeeRate(...) internal view returns (int256 delta, uint256 feeRate) {
    if (PoolStorage.layout().setUp.assets.totalWeight == 0
            || PoolStorage.layout().ledger.state.virtualNetPoolValue == 0
    ) return (0, feeRate);
}

3. PLP price emissions are also missed.

Recommendation:

Apply _refreshVirtualPoolValue() and _emitPLPPrice() called in _payout().