[SDK] Extract twenty-front-component-renderer outside of twenty-sdk ( 2.8MB ) (#19021)

Followup https://github.com/twentyhq/twenty/pull/19010

## Dependency diagram

```
┌─────────────────────┐
│     twenty-front    │
│   (React frontend)  │
└─────────┬───────────┘
          │ imports runtime:
          │   FrontComponentRenderer
          │   FrontComponentRendererWithSdkClient
          │   useFrontComponentExecutionContext
          ▼
┌──────────────────────────────────┐         ┌─────────────────────────┐
│ twenty-front-component-renderer  │────────▶│       twenty-sdk        │
│   (remote-dom host + worker)     │         │  (app developer SDK)    │
│                                  │         │                         │
│  imports from twenty-sdk:        │         │  Public API:            │
│   • types only:                  │         │   defineFrontComponent  │
│     FrontComponentExecutionContext│         │   navigate, closeSide…  │
│     NavigateFunction             │         │   useFrontComponent…    │
│     CloseSidePanelFunction       │         │   Command components    │
│     CommandConfirmation…         │         │   conditional avail.    │
│     OpenCommandConfirmation…     │         │                         │
│     EnqueueSnackbarFunction      │         │  Internal only:         │
│     etc.                         │         │   frontComponentHost…   │
│                                  │         │   front-component-build │
│  owns locally:                   │         │   esbuild plugins       │
│   • ALLOWED_HTML_ELEMENTS        │         │                         │
│   • EVENT_TO_REACT               │         └────────────┬────────────┘
│   • HTML_TAG_TO_CUSTOM_ELEMENT…  │                      │
│   • SerializedEventData          │                      │ types
│   • PropertySchema               │                      ▼
│   • frontComponentHostComm…      │         ┌─────────────────────────┐
│     (local ref to globalThis)    │         │     twenty-shared       │
│   • setFrontComponentExecution…  │         │  (common types/utils)   │
│     (local impl, same keys)      │         │   AppPath, SidePanelP…  │
│                                  │         │   EnqueueSnackbarParams │
└──────────────────────────────────┘         │   isDefined, …          │
          │                                  └─────────────────────────┘
          │ also depends on
          ▼
    twenty-shared (types)
    @remote-dom/* (runtime)
    @quilted/threads (runtime)
    react (runtime)
```

**Key points:**

- **`twenty-front`** depends on the renderer, **not** on `twenty-sdk`
directly (for rendering)
- **`twenty-front-component-renderer`** depends on `twenty-sdk` for
**types only** (function signatures, `FrontComponentExecutionContext`).
The runtime bridge (`frontComponentHostCommunicationApi`) is shared via
`globalThis` keys, not module imports
- **`twenty-sdk`** has no dependency on the renderer — clean one-way
dependency
- The renderer owns all remote-dom infrastructure (element schemas,
event mappings, custom element tags) that was previously leaking through
the SDK's public API
- The SDK's `./build` entry point was removed entirely (unused)

.github/workflows/ci-front.yaml

@@ -25,6 +25,7 @@ jobs:
         package.json
         yarn.lock
         packages/twenty-front/**
+        packages/twenty-front-component-renderer/**
         packages/twenty-ui/**
         packages/twenty-shared/**
         packages/twenty-sdk/**
@@ -93,7 +94,7 @@ jobs:
         run: |
           npx nx build twenty-shared
           npx nx build twenty-ui
-          npx nx build twenty-sdk
+          npx nx build twenty-front-component-renderer
       - name: Download storybook build
         uses: actions/download-artifact@v4
         with: