Improve method name for clarity and consistency

app/models/ci/build.rb

@@ -673,7 +673,7 @@ def has_trace?
     end
     def has_live_trace?
-      trace.live_trace_exist?
+      trace.live?
     end
     def has_archived_trace?

lib/gitlab/ci/trace.rb

@@ -74,14 +74,14 @@ def append(data, offset)
       end
       def exist?
-        archived? || live_trace_exist?
+        archived? || live?
       end
       def archived?
         trace_artifact&.stored?
       end
-      def live_trace_exist?
+      def live?
         job.trace_chunks.any? || current_path.present? || old_trace.present?
       end

spec/support/shared_examples/lib/gitlab/ci/ci_trace_shared_examples.rb

@@ -834,8 +834,8 @@
     end
   end
-  describe '#live_trace_exist?' do
-    subject { trace.live_trace_exist? }
+  describe '#live?' do
+    subject { trace.live? }
     context 'when trace does not exist' do
       it { is_expected.to be_falsy }