key should be case sensitive

[LaurenceHo]

Describe the bug
When I use "get" method to get an object e.g

const response: QueryResponse<typeof this._entity> = await this._entity
      .get({id: "Apple-and-Orange"})
      .go();

I cannot get this object, which exists in DynamoDB. So I placed the logger into entity, and I found out the "id" became lower case. Here is part of log:

queryKey { id: "Apple-and-Orange" }

{
    "type": "query",
    "method": "get",
    "params": {
        "Key": {
            "id": "apple-and-orange"
        },
        "TableName": "my-table"
    },
    "config": {
        "includeKeys": false,
......

ElectroDB Version
2.13.1

ElectroDB Playground Link
N/A

Entity/Service Definitions
Include your entity model (or a model that sufficiently recreates your issue) to help troubleshoot.

{
    model: {
        entity: "my_entity",
        service: "my_service",
        version: "my_version"
    },
    attributes: {
        prop1: {
            type: "string"
        },
        prop2: {
            type: "string"
        }
    },
    indexes: {
        record: {
            pk: {
                field: "pk",
                composite: ["prop1"],
            },
            sk: {
                field: "sk",
                composite: ["prop2"],
            },
        }
    }
}

Expected behavior
Key should be case-sensitive rather than converted to lower case.

Errors

Cannot find the object from Electrodb but it exists in DynamoDB.

Additional context
Add any other context about the problem here.

[LaurenceHo]

For anyone who is running into the same issue as me, we can add casing in the index. Please check this doc.