workflow: Add button to open the step view (#16387)

This PR adds an icon button that appears as you hover over the step header, which allows users to visit the step view.

---

Release Notes:

- N/A

crates/ui/src/components/icon.rs

@@ -230,6 +230,7 @@ pub enum IconName {
     Save,
     Screen,
     SearchSelection,
+    SearchCode,
     SelectAll,
     Server,
     Settings,
@@ -396,6 +397,7 @@ impl IconName {
             IconName::Save => "icons/save.svg",
             IconName::Screen => "icons/desktop.svg",
             IconName::SearchSelection => "icons/search_selection.svg",
+            IconName::SearchCode => "icons/search_code.svg",
             IconName::SelectAll => "icons/select_all.svg",
             IconName::Server => "icons/server.svg",
             IconName::Settings => "icons/file_icons/settings.svg",