[Request] Remove/Increase the Dashboard Widgets Limit

### Problem Statement

From @Lms24,
> I’m maintaining a dashboard in the Sentry ... and I just reached the limit of how many widgets a dashboard can contain. My immediate reaction was that 30 widgets seems a little low as a limit. Fwiw, we’re tracking a lot of things in this dashboard so it might be more complex than the average board. I’m sure there are performance/resource concerns to limit the max number of widgets but I’m curious if there’s a way we could increase it?

> @silent1mezzo:
> IIRC that limit was put in place prior to us lazy loading widgets so we could probably lift the limit

### Solution Brainstorm

Increase the limit if feasible

### Product Area

Dashboards