feat(server): get public user by id (#10434)

close CLOUD-160

packages/backend/server/src/schema.gql

@@ -493,7 +493,7 @@ input GrantDocUserRolesInput {
 
 type GrantedDocUserType {
   role: DocRole!
-  user: PublicUserType!
+  user: WorkspaceUserType!
 }
 
 type GrantedDocUserTypeEdge {
@@ -997,7 +997,6 @@ enum PublicDocMode {
 
 type PublicUserType {
   avatarUrl: String
-  email: String!
   id: String!
   name: String!
 }
@@ -1022,6 +1021,9 @@ type Query {
   listCopilotPrompts: [CopilotPromptType!]!
   prices: [SubscriptionPrice!]!
 
+  """Get public user by id"""
+  publicUserById(id: String!): PublicUserType
+
   """server config"""
   serverConfig: ServerConfigType!
 
@@ -1555,6 +1557,13 @@ type WorkspaceType {
   team: Boolean!
 }
 
+type WorkspaceUserType {
+  avatarUrl: String
+  email: String!
+  id: String!
+  name: String!
+}
+
 type WrongSignInCredentialsDataType {
   email: String!
 }