handle order undefined in getJitIx

[jordy25519]

using TS sdkJitProxyClient.getJitIx to build transactions and encounter this error occasionally

/project/node_modules/@drift-labs/jit-proxy/lib/jitProxyClient.js:30
            writableSpotMarketIndexes: (0, sdk_1.isVariant)(order.marketType, 'spot')
                                                                  ^
TypeError: Cannot read properties of undefined (reading 'marketType')

seems like some race condition and the order is not found

[so0814]

using TS sdkJitProxyClient.getJitIx to build transactions and encounter this error occasionally

/project/node_modules/@drift-labs/jit-proxy/lib/jitProxyClient.js:30
writableSpotMarketIndexes: (0, sdk_1.isVariant)(order.marketType, 'spot')
^
TypeError: Cannot read properties of undefined (reading 'marketType')
seems like some race condition and the order is not found