[BugFix] SEC ETF Holdings - Try Catch for RemoteDisconnect Error

[deeleeramone]

1. Why?:

This is an attempt to mitigate a RemoteDisconnect error which can occasionally get raised from an SEC search query. In the handful of times I have encountered, the next request is successful.

2. What? (1-3 sentences or a bullet point list):

   • Implement up-to 3 retries with a one-second sleep. If a retry is successful, a warning will be set as a notification.

   • Example: "Updated the risk calculation algorithm to factor in real-time market fluctuations."

3. Impact (1-2 sentences or a bullet point list):

   • This may extend the timeout period, but if a response cannot be read within a couple of seconds, there is likely a network error.

4. Testing Done:

   • Extremely hard to recreate, @montezdesousa, are you able to reliably reproduce and/or does this resolve?

[montezdesousa]

Cannot reproduce, but changes lgtm