Fix SVG markup in select options, add missing name placeholders

Remove SVG icon function calls from <option> textContent — native
select elements render markup as literal text. Capture template options
now show "name (engine_type)", source options show just the name.

Add i18n placeholders to automation and scene editor name inputs.
Rename HAOS Scenes device from "{server_name} Scenes" to "Scenes".

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

server/src/wled_controller/static/locales/en.json

@@ -551,6 +551,7 @@
   "automations.delete.confirm": "Delete automation \"{name}\"?",
   "automations.name": "Name:",
   "automations.name.hint": "A descriptive name for this automation",
+  "automations.name.placeholder": "My Automation",
   "automations.enabled": "Enabled:",
   "automations.enabled.hint": "Disabled automations won't activate even when conditions are met",
   "automations.condition_logic": "Condition Logic:",
@@ -626,6 +627,7 @@
   "scenes.edit": "Edit Scene",
   "scenes.name": "Name:",
   "scenes.name.hint": "A descriptive name for this scene preset",
+  "scenes.name.placeholder": "My Scene",
   "scenes.description": "Description:",
   "scenes.description.hint": "Optional description of what this scene does",
   "scenes.color": "Card Color:",