Unable to filter some transactions where numerical fields are the value 0

### Subject of the issue

If you search for transactions without certain filters, the result will include transactions where certain fields are 0 (amount, asset-id, application-id). But if you attempt to filter for those transactions, they seem to disappear for some fields.

### Steps to reproduce

Finding asset transfers where amount is 0.
```
# Count number of axfer transactions in block 47171361, filtering for amount==0 in jq.
nullun ~ % curl -s "https://mainnet-idx.algonode.cloud/v2/transactions?round=47171361&tx-type=axfer" | jq '.transactions | map(select(."asset-transfer-transaction".amount == 0)) | length'
16

# Count number of axfer transactions in block 47171361, filtering for currency-less-than=1 in URL.
nullun ~ % curl -s "https://mainnet-idx.algonode.cloud/v2/transactions?round=47171361&tx-type=axfer¤cy-less-than=1" | jq '.transactions | map(select(."asset-transfer-transaction".amount == 0)) | length'
0
```

Looking for application creations, where application-id is 0.
```
# Count number of appl transactions in block 49725523, filtering for application-id==0 in jq.
nullun ~ % curl -s "https://mainnet-idx.algonode.cloud/v2/transactions?round=49725523&tx-type=appl" | jq '.transactions | map(select(."application-transaction"."application-id" == 0)) | length'
1

# Count number of appl transactions in block 49725523, filtering for application-id==0 in URL.
nullun ~ % curl -s "https://mainnet-idx.algonode.cloud/v2/transactions?round=49725523&tx-type=appl&application-id=0" | jq '.transactions | map(select(."application-transaction"."application-id" == 0)) | length'
0
```

But interestingly, if you look for asset transfers, where asset-id is 0. This does work correctly.
```
# Count number of axfer transactions in block 47171361, filtering for asset-id==0 in jq.
nullun ~ % curl -s "https://mainnet-idx.algonode.cloud/v2/transactions?round=47171361&tx-type=axfer" | jq '.transactions | map(select(."asset-transfer-transaction"."asset-id" == 0)) | length'
1

# Count number of axfer transactions in block 47171361, filtering for asset-id==0 in URL.
nullun ~ % curl -s "https://mainnet-idx.algonode.cloud/v2/transactions?round=47171361&tx-type=axfer&asset-id=0" | jq '.transactions | map(select(."asset-transfer-transaction"."asset-id" == 0)) | length'
1
```

### Your environment

This is consistent on all networks at the moment, including a local sandbox environment building from source.

### Expected behaviour

I would probably expect transactions where a field is 0 to be returned if I'm searching for transactions where the field is 0. E.g. Looking for asset optin transactions where amount is zero. Or looking for applications being created since their application-id didn't exist when sending.

### Actual behaviour

Some transactions that were committed to the chain with certain fields containing the value 0 are not returned when filtering for them.