Model Registry present latest SemVer instead of ID

Changelog: changed

app/models/ml/model_version.rb

@@ -29,7 +29,10 @@ class ModelVersion < ApplicationRecord
     delegate :name, to: :model
 
     scope :order_by_model_id_id_desc, -> { order('model_id, id DESC') }
-    scope :latest_by_model, -> { order_by_model_id_id_desc.select('DISTINCT ON (model_id) *') }
+    scope :latest_by_model, -> {
+                              order(model_id: :desc, semver_major: :desc, semver_minor: :desc, semver_patch: :desc)
+                                .select('DISTINCT ON (model_id) *')
+                            }
     scope :by_version, ->(version) { where("version LIKE ?", "#{sanitize_sql_like(version)}%") } # rubocop:disable GitlabSecurity/SqlInjection -- we are sanitizing
     scope :for_model, ->(model) { where(project: model.project, model: model) }
     scope :including_relations, -> { includes(:project, :model, :candidate) }

doc/user/project/ml/experiment_tracking/mlflow_client.md

@@ -199,7 +199,7 @@ client.get_latest_versions(model_name)
 **Notes**
 
 - Argument `stages` is ignored.
-- Versions are ordered by last created.
+- Versions are ordered by highest semantic version.
 
 #### Logging metrics and parameters to a model version
 

spec/models/ml/model_version_spec.rb

@@ -233,7 +233,7 @@
     subject { described_class.latest_by_model }
 
     it 'returns only the latest model version per model id' do
-      is_expected.to match_array([model_version4, model_version2])
+      is_expected.to match_array([model_version3, model_version2])
     end
   end