[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/dialog/content/LoadWorkflowWarning.vue

@@ -46,7 +46,12 @@
           : $t('manager.installAllMissingNodes')
       "
     />
-    <Button label="Open Manager" size="small" outlined @click="openManager" />
+    <Button
+      :label="$t('g.openManager')"
+      size="small"
+      outlined
+      @click="openManager"
+    />
   </div>
 </template>
 

src/components/dialog/content/SignInContent.vue

@@ -89,7 +89,7 @@
           <img
             src="/assets/images/comfy-logo-mono.svg"
             class="mr-2 h-5 w-5"
-            alt="Comfy"
+            :alt="$t('g.comfy')"
           />
           {{ t('auth.login.useApiKey') }}
         </Button>

src/components/dialog/content/setting/KeybindingPanel.vue

@@ -89,7 +89,7 @@
           ref="keybindingInput"
           class="mb-2 text-center"
           :model-value="newBindingKeyCombo?.toString() ?? ''"
-          placeholder="Press keys for new binding"
+          :placeholder="$t('g.pressKeysForNewBinding')"
           autocomplete="off"
           fluid
           @keydown.stop.prevent="captureKeybinding"