feat(issues): Update trace navigator images + description (#9358)

Author: scttcper

docs/product/issues/issue-details/index.mdx

@@ -46,16 +46,14 @@ To view other events, you can use the dropdown to skip to the latest or oldest e
 
 ![Trace Navigator](/product/issues/issue-details/trace-navigator.png)
 
-The trace navigator (which displays below the date) is an abbreviated view of the related [trace](/product/sentry-basics/tracing/distributed-tracing) for the current transaction. It displays up to six nodes, each representing different groups of the event's trace:
+The trace navigator (which you'll see right below the Event ID), is a timeline view that shows any other issues that might be part of the current event's [trace](/product/sentry-basics/tracing/distributed-tracing). The trace navigator shows up to 100 additional issues and you can click on any of them to view their details. Seeing (and being able to toggle between) multiple issues connected to a single event can be helpful for figuring out what went wrong. Note that the trace navigator is only available for issues that are part of a trace and have more than one issue.
 
-- **Root**: Starting transaction
-- **Ancestor**: Events that are descendants of the root, and are directly related to the current event
-- **Parent**: Event that directly started the current event
-- **This Event**: Node representing the current event being viewed
-- **Children**: Events that the current event directly started
-- **Descendants**: Future generations of events created by children of this event
+Issues in the trace navigator timeline are represented by dots of various shades of red. Here are the different types  to note:
+
+- **Current Issue**: The current event you're viewing, which is larger than the other events in the trace.
+- **Error Issue**: Represented with a solid, closed red dot. The shade varies from lighter to darker, with darker shades representing more events occurring at the same timestamp.
+- **Performance Issue**: Represented with an open dot.
 
-A node will be red if it is associated with errors.
 Click "View Full Trace" to display the [Trace View](/product/sentry-basics/tracing/trace-view).
 
 ## Suspect Commits