feat: add "Similar to Current" sort option to template selector

Wire the existing templateSimilarity module into the template selector
dialog so users can rank templates by how closely they match the nodes
in their active workflow. The sort extracts node types from the current
graph and scores each template using weighted Jaccard similarity across
categories, tags, models, and required nodes.

- Add 'similar-to-current' to sort dropdown, schema enum, type union,
  and telemetry type
- Export computeSimilarity from templateSimilarity.ts for direct use
- Add i18n key templateWorkflows.sort.similarToCurrent
- Bump version to 1.44.0

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/components/custom/widget/WorkflowTemplateSelectorDialog.vue

@@ -724,6 +724,10 @@ const sortOptions = computed(() => [
     name: t('templateWorkflows.sort.recommended', 'Recommended'),
     value: 'recommended'
   },
+  {
+    name: t('templateWorkflows.sort.similarToCurrent', 'Similar to Current'),
+    value: 'similar-to-current'
+  },
   {
     name: t('templateWorkflows.sort.popular', 'Popular'),
     value: 'popular'