Refactor workflow to use new functions (#17552)

Removes the versioning system for logic functions (`latestVersion`,
`publishedVersions`) and simplifies the file storage structure.

### Changes
- Remove `publishOneLogicFunctionOrFail` and publishing logic from
workflow status updates
- Add `createLogicFunctionFromExistingLogicFunction` to duplicate logic
functions when creating draft workflow versions
- Update `createDraftStep` to create a new logic function copy instead
of referencing the same one
- Migrate file storage to v2 endpoints with
`applicationUniversalIdentifier`
- Unify path structure: source files at `source/workflow/{id}/`, built
files at `built-logic-function/workflow/{id}/`
- Store full paths in `sourceHandlerPath` and `builtHandlerPath` entity
fields

packages/twenty-server/src/engine/metadata-modules/logic-function/logic-function.entity.ts

@@ -41,7 +41,7 @@ export enum LogicFunctionRuntime {
 }
 
 export const DEFAULT_SOURCE_HANDLER_PATH = 'src/index.ts';
-export const DEFAULT_BUILT_HANDLER_PATH = 'index.mjs';
+export const DEFAULT_BUILT_HANDLER_PATH = 'src/index.mjs';
 export const DEFAULT_HANDLER_NAME = 'main';
 
 @Entity('logicFunction')