Use metrics-id for sentry user id when we have it (#42931)

This should make it easier to correlate Sentry reports with user reports
and
github issues (for users who have diagnostics enabled)

Release Notes:

- N/A

crates/zed/Cargo.toml

@@ -29,7 +29,6 @@ assets.workspace = true
 audio.workspace = true
 auto_update.workspace = true
 auto_update_ui.workspace = true
-backtrace = "0.3"
 bincode.workspace = true
 breadcrumbs.workspace = true
 call.workspace = true
@@ -100,7 +99,6 @@ migrator.workspace = true
 miniprofiler_ui.workspace = true
 mimalloc = { version = "0.1", optional = true }
 nc.workspace = true
-nix = { workspace = true, features = ["pthread", "signal"] }
 node_runtime.workspace = true
 notifications.workspace = true
 onboarding.workspace = true
@@ -140,7 +138,6 @@ tab_switcher.workspace = true
 task.workspace = true
 tasks_ui.workspace = true
 telemetry.workspace = true
-telemetry_events.workspace = true
 terminal_view.workspace = true
 theme.workspace = true
 theme_extension.workspace = true