Incorrect Query Results for RNDR Positions

[happysammy]

Description:
When the Client is initialized with the parameter asset = [Asset.RNDR] and the fetch_margin_state method is called, the query results only include 'SOL' positions. However, there are RNDR positions that should be returned. This discrepancy indicates a bug in the query logic, as the expected result should include RNDR positions when specified.

Expected Behavior:
When asset = [Asset.RNDR] is set, the fetch_margin_state method should return positions for RNDR.

Actual Behavior:
The method returns positions only for 'SOL', ignoring the specified RNDR positions.

Steps to Reproduce:

1. Initialize the Zeta Client with asset = [Asset.RNDR].
2. Call the fetch_margin_state method.
3. Observe that the returned positions only include 'SOL' and exclude RNDR.

Impact:

This issue leads to incomplete and incorrect position data being retrieved, affecting any functionality or decisions based on these results.

Request:
Please investigate and fix this bug to ensure that the fetch_margin_state method correctly returns positions for the specified assets, including RNDR.

Thank you for addressing this issue.