refactor: share whatsapp/twilio template logic via @chatwoot/utils (#15001)

# Pull Request Template

## Description
Moves the WhatsApp & Twilio content-template logic to the shared
[`@chatwoot/utils`](https://github.com/chatwoot/utils)
([PR](https://github.com/chatwoot/utils/pull/62)) package so web and
mobile share one implementation. The neutral core takes the raw template
and returns `processed_params`, the same shape the web parsers already
use, so it's a drop-in with no behavior change.

- `templateHelper.js` / `URLHelper.js` → source `MEDIA_FORMATS`,
`findComponentByType`, `processVariable`, `buildTemplateParameters`,
`extractFilenameFromUrl` from the package
- `inboxes.js` → filters with shared `isSendableTemplate`
- `WhatsAppTemplateParser.vue` / `ContentTemplateParser.vue` →
`isFormInvalid` and Twilio media helpers now use the shared
`isWhatsAppComplete` / `isTwilioComplete` / `applyTwilioMediaFilename`

> Depends on the `@chatwoot/utils` release adding the shared template
API, bump `package.json` from `^0.0.55` to the published version before
merge.

Fixes
[CW-7540](https://linear.app/chatwoot/issue/CW-7540/web-templates-integration-with-utils)

## Type of change

- [x] Breaking change (Refactor)

---------

Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>
Co-authored-by: Muhsin <12408980+muhsin-k@users.noreply.github.com>

package.json

@@ -35,7 +35,7 @@
     "@breezystack/lamejs": "^1.2.7",
     "@chatwoot/ninja-keys": "1.2.3",
     "@chatwoot/prosemirror-schema": "1.3.22",
-    "@chatwoot/utils": "^0.0.55",
+    "@chatwoot/utils": "^0.0.56",
     "@formkit/core": "^1.7.2",
     "@formkit/vue": "^1.7.2",
     "@hcaptcha/vue3-hcaptcha": "^1.3.0",