[FRONT COMPONENTS] Introduce conditionalAvailabilityExpression to command menu items (#18319)

## PR Description

- Uses `expr-eval` to enable front components (SDK plugins) to define
conditional availability as declarative expressions.
- Moves shared types and constants to `twenty-shared`
- Introduces a `conditionalAvailabilityExpression` field on
`CommandMenuItemEntity`, allowing command menu items to store an
`expr-eval` compatible expression string that is evaluated against a
CommandMenuContext to determine if the item should be shown.
- Creates an esbuild transform plugin
`conditional-availability-transform-plugin` in `twenty-sdk` that
converts TypeScript conditional availability expressions into
`expr-eval` compatible syntax at build time, so SDK developers can write
natural TS expressions that get transformed to evaluable strings.
- Removes deprecated `forceRegisteredActionsByKey` state and its usage.
- Creates `useCommandMenuContext` hook that builds the full
`CommandMenuContext` object from React state, which is then passed to
`useCommandMenuItemFrontComponentActions` for evaluating conditional
availability expressions.

packages/twenty-server/src/engine/core-modules/tool/tools/email-tool/email-composer.service.ts

@@ -6,7 +6,7 @@ import { Readable } from 'stream';
 import { render, toPlainText } from '@react-email/render';
 import DOMPurify from 'dompurify';
 import { reactMarkupFromJSON } from 'twenty-emails';
-import { FileFolder } from 'twenty-shared/types';
+import { FileFolder, FeatureFlagKey } from 'twenty-shared/types';
 import {
   extractFolderPathFilenameAndTypeOrThrow,
   isDefined,
@@ -16,7 +16,6 @@ import { WorkflowAttachment } from 'twenty-shared/workflow';
 import { In, type Repository } from 'typeorm';
 import { z } from 'zod';
 
-import { FeatureFlagKey } from 'src/engine/core-modules/feature-flag/enums/feature-flag-key.enum';
 import { FeatureFlagService } from 'src/engine/core-modules/feature-flag/services/feature-flag.service';
 import { FileEntity } from 'src/engine/core-modules/file/entities/file.entity';
 import { FileService } from 'src/engine/core-modules/file/services/file.service';