Drop await usage for now-synchronous encodeFileToken() (#11612)

### Remove unnecessary `await` from `encodeFileToken` calls (now
synchronous) #11611

####  Context

In [PR #11385 – commit
26c17f3](26c17f3205),
`FileService.encodeFileToken()` was updated to be a **synchronous**
method. However, several places in the codebase were still calling it
using `await`.

####  Changes 
This PR cleans up those redundant `await` usages to:
- Improve clarity
- Avoid confusion (no longer awaiting a non-Promise)
- Slightly reduce overhead in affected functions
- Removed `await` from calls to `this.fileService.encodeFileToken(...)`

packages/twenty-server/src/engine/core-modules/user/user.resolver.ts

@@ -181,7 +181,7 @@ export class UserResolver {
     );
 
     if (workspaceMember && workspaceMember.avatarUrl) {
-      const avatarUrlToken = await this.fileService.encodeFileToken({
+      const avatarUrlToken = this.fileService.encodeFileToken({
         workspaceMemberId: workspaceMember.id,
         workspaceId: workspace.id,
       });
@@ -233,7 +233,7 @@ export class UserResolver {
 
     for (const workspaceMemberEntity of workspaceMemberEntities) {
       if (workspaceMemberEntity.avatarUrl) {
-        const avatarUrlToken = await this.fileService.encodeFileToken({
+        const avatarUrlToken = this.fileService.encodeFileToken({
           workspaceMemberId: workspaceMemberEntity.id,
           workspaceId: workspace.id,
         });
@@ -318,7 +318,7 @@ export class UserResolver {
       workspaceId,
     });
 
-    const fileToken = await this.fileService.encodeFileToken({
+    const fileToken = this.fileService.encodeFileToken({
       workspaceId: workspaceId,
     });