OtaFileSize type is incorrect (needs to be uint64 instead of str)

[samadDotDev]

The OtaFileSize is defined as uint64 in Matter Spec. However, the schema is incorrectly returning it as a string, for instance:

curl --location --request GET 'https://on.test-net.dcl.csa-iot.org/dcl/model/versions/31/100/1'

{
    "modelVersion": {
        "vid": 31,
        "pid": 100,
        "softwareVersion": 1,
        "softwareVersionString": "1.0",
        "cdVersionNumber": 1,
        "firmwareInformation": "",
        "softwareVersionValid": true,
        "otaUrl": "",
        "otaFileSize": "0",
        "otaChecksum": "",
        "otaChecksumType": 0,
        "minApplicableSoftwareVersion": 1,
        "maxApplicableSoftwareVersion": 10,
        "releaseNotesUrl": "",
        "creator": "cosmos1clsrmjxx07k9u70wgem3q9ve9s978adgmhnt0m"
    }
}

It is also specified incorrectly as a string in the docs of this repo. Note that even this repository contains it as a strong number / uint64 in most places:

• distributed-compliance-ledger/x/model/types/messages_model_version.go

  Line 27 in d516d71

  otaFileSize uint64,

• distributed-compliance-ledger/x/model/client/cli/tx_model_version.go

  Line 22 in d516d71

  otaFileSize uint64

• distributed-compliance-ledger/vue/src/store/generated/zigbee-alliance/distributed-compliance-ledger/zigbeealliance.distributedcomplianceledger.model/module/types/model/tx.ts

  Line 66 in d516d71

  otaFileSize: number

• distributed-compliance-ledger/vue/src/store/generated/zigbee-alliance/distributed-compliance-ledger/zigbeealliance.distributedcomplianceledger.model/module/types/model/model_version.d.ts

  Line 12 in d516d71

  otaFileSize: number;

• distributed-compliance-ledger/vue/src/store/generated/zigbee-alliance/distributed-compliance-ledger/zigbeealliance.distributedcomplianceledger.model/module/types/model/model_version.ts

  Line 16 in d516d71

  otaFileSize: number

But then there are places like the following which specify it as a string:

• distributed-compliance-ledger/vue/src/store/generated/zigbee-alliance/distributed-compliance-ledger/zigbeealliance.distributedcomplianceledger.model/module/rest.d.ts

  Line 42 in d516d71

  otaFileSize?: string;

• distributed-compliance-ledger/vue/src/store/generated/zigbee-alliance/distributed-compliance-ledger/zigbeealliance.distributedcomplianceledger.model/module/rest.ts

  Line 64 in 0f37e05

  otaFileSize?: string;