[bugfix] Fix i18n linting errors (#6170)

## Summary
- Fix i18n linting errors by adding missing locale keys to
`src/locales/en/main.json`
- Update all affected components to use `$t()` for internationalization

## Changes
Added the following locale keys:
- `comfyOrgLogoAlt`: "ComfyOrg Logo"
- `comfy`: "Comfy"
- `pressKeysForNewBinding`: "Press keys for new binding"
- `defaultBanner`: "default banner"
- `enableOrDisablePack`: "Enable or disable pack"
- `openManager`: "Open Manager"
- `graphNavigation`: "Graph navigation"

Updated components to use i18n keys:
- `ComfyOrgHeader.vue`
- `KeybindingPanel.vue`
- `PackBanner.vue`
- `PackIcon.vue`
- `PackEnableToggle.vue`
- `LoadWorkflowWarning.vue`
- `SubgraphBreadcrumb.vue`
- `SignInContent.vue`

## Test plan
- [x] Run `pnpm lint` - all i18n linting errors resolved
- [x] Pre-commit hooks pass

Aim to make #5625 CI/CD pass.

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

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6170-bugfix-Fix-i18n-linting-errors-2926d73d365081c3b7fbcbbf4a8e03d6)
by [Unito](https://www.unito.io)

Co-authored-by: Claude <noreply@anthropic.com>

src/components/breadcrumb/SubgraphBreadcrumb.vue

@@ -18,7 +18,7 @@
       class="w-fit rounded-lg p-0"
       :model="items"
       :pt="{ item: { class: 'pointer-events-auto' } }"
-      aria-label="Graph navigation"
+      :aria-label="$t('g.graphNavigation')"
     >
       <template #item="{ item }">
         <SubgraphBreadcrumbItem