Add spec for SentryErrorType global id

Add changelog file

app/presenters/sentry_error_presenter.rb

@@ -14,7 +14,7 @@ class SentryErrorPresenter < Gitlab::View::Presenter::Delegated
   end
 
   def project_id
-    Gitlab::GlobalId.build(model_name: 'Project', id: error.project_id).to_s
+    Gitlab::GlobalId.build(model_name: 'SentryProject', id: error.project_id).to_s
   end
 
   def frequency

changelogs/unreleased/235857-sentryerrortype-project_id-returns-a-project-global-id.yml

+---
+title: Fix type of SentryErrorType global ID
+merge_request: 42185
+author:
+type: fixed

spec/presenters/sentry_error_presenter_spec.rb

@@ -26,4 +26,12 @@ RSpec.describe SentryErrorPresenter do
       expect(count).to eq error.frequency.first[1]
     end
   end
+
+  describe '#project_id' do
+    subject { presenter.project_id }
+
+    it 'returns a global ID of the correct type' do
+      expect(subject).to eq(Gitlab::GlobalId.build(model_name: 'SentryProject', id: error.project_id).to_s)
+    end
+  end
 end