Do not report same project type multiple times for same worktree (#32785)

Follow-up to: https://github.com/zed-industries/zed/pull/32769

Now that the project type identification telemetry can look for multiple
files in order to identify the project type, we need to make sure we
still only send a single event for a given worktree.

Also, simplifies project detection telemetry code

Release Notes:

- N/A

crates/project/src/project.rs

@@ -2945,7 +2945,7 @@ impl Project {
             WorktreeStoreEvent::WorktreeUpdatedEntries(worktree_id, changes) => {
                 self.client()
                     .telemetry()
-                    .report_discovered_project_events(*worktree_id, changes);
+                    .report_discovered_project_type_events(*worktree_id, changes);
                 cx.emit(Event::WorktreeUpdatedEntries(*worktree_id, changes.clone()))
             }
             WorktreeStoreEvent::WorktreeDeletedEntry(worktree_id, id) => {