Charts render as lightweight layers; scrolling lighter across logs and traces

Reworked how Dash0 renders high-cardinality charts and scrolls long lists for improved responsiveness. High-cardinality line, bar, and pie charts now render as a single lightweight layer instead of thousands of individual shapes, improving hover responsiveness and load times. Scrolling is also lighter in Logs, Traces, and the Web Events Explorer. Fixed a pie chart issue where charts with many empty or zero value series could render blank.