fix prop bindings on Vue nodes' gallery widgets (#5542)

* fix gallery widget navigators binding

* [refactor] improve test structure and type organization - addresses @DrJKL's review feedback

- Move types comment to reference component file (types already exist there)
- Extract helper functions outside describe blocks as pure functions
- Convert to function declarations for better clarity
- Fix 0-indexed vs 1-indexed consistency in test data generation
- Add placeholder for future test constants organization

* [test] Add WidgetTextarea component test with improved structure - addresses @DrJKL's review feedback

- Move helper functions outside describe blocks as pure function declarations
- Fix options type in createMockWidget to use SimplifiedWidget['options'] instead of Partial<TextareaProps>
- Replace emitted\![0] with safer emitted?.[0] optional chaining pattern
- Add comprehensive test coverage for textarea value binding, events, readonly mode, and edge cases

🤖 Generated with [Claude Code](https://claude.ai/code)

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

* Update src/renderer/extensions/vueNodes/widgets/components/WidgetGalleria.vue

Co-authored-by: Alexander Brown <drjkl@comfy.org>

* [refactor] export types from component and use 0-indexed numbering - addresses @DrJKL's review feedback

- Export GalleryImage and GalleryValue types from WidgetGalleria.vue component
- Import types in test file instead of redefining them locally
- Change image alt text from 1-indexed to 0-indexed (Image 0, Image 1, etc.)
- Move helper functions outside describe blocks using function declarations
- Add readonly test data constants for better test isolation
- Fix type compatibility issues with readonly arrays

This addresses DrJKL's review comments about:
1. Types being defined in test suite instead of component
2. Helper functions placement and clarity
3. 1-indexed numbering preference
4. Better test organization with readonly constants

* [refactor] implement remaining review feedback - addresses accessibility and factory pattern suggestions

- Fix accessibility: Add descriptive alt text with position context for screen readers
  instead of repetitive "Gallery image" (e.g., "Gallery image 2 of 5")
- Implement factory pattern: Add createGalleriaWrapper() function that takes images,
  creates widget internally, and returns wrapper for cleaner test code
- Update tests to use factory pattern for readonly constant test cases
- Add proper i18n translations for galleryImage and galleryThumbnail
- Use more descriptive alt text following WebAIM accessibility guidelines

Addresses review comments about screen reader accessibility and test factory pattern

---------

Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Alexander Brown <drjkl@comfy.org>

src/renderer/extensions/vueNodes/widgets/components/WidgetTextarea.test.ts

@@ -7,24 +7,26 @@ import type { SimplifiedWidget } from '@/types/simplifiedWidget'
 
 import WidgetTextarea from './WidgetTextarea.vue'
 
-const createMockWidget = (
+function createMockWidget(
   value: string = 'default text',
-  options: Record<string, any> = {},
+  options: SimplifiedWidget['options'] = {},
   callback?: (value: string) => void
-): SimplifiedWidget<string> => ({
-  name: 'test_textarea',
-  type: 'string',
-  value,
-  options,
-  callback
-})
+): SimplifiedWidget<string> {
+  return {
+    name: 'test_textarea',
+    type: 'string',
+    value,
+    options,
+    callback
+  }
+}
 
-const mountComponent = (
+function mountComponent(
   widget: SimplifiedWidget<string>,
   modelValue: string,
   readonly = false,
   placeholder?: string
-) => {
+) {
   return mount(WidgetTextarea, {
     global: {
       plugins: [PrimeVue],
@@ -39,11 +41,11 @@ const mountComponent = (
   })
 }
 
-const setTextareaValueAndTrigger = async (
+async function setTextareaValueAndTrigger(
   wrapper: ReturnType<typeof mount>,
   value: string,
   trigger: 'blur' | 'input' = 'blur'
-) => {
+) {
   const textarea = wrapper.find('textarea')
   if (!(textarea.element instanceof HTMLTextAreaElement)) {
     throw new Error(