Rename generatedAICommitMessage to generatedSuggestionWithAI in ServerToClientMessage

Summary:
- Renamed `generatedAICommitMessage` to `generatedSuggestionWithAI` in the ISL server to client message
- Modified `AIGeneratedCommitMessage.test.tsx` accordingly

Reviewed By: LEON-MING

Differential Revision: D63999980

fbshipit-source-id: ab8830552b126d403c6ffc33757f7fec4f89862e

Author: Picowchew

addons/isl-server/src/ServerToClientAPI.ts

@@ -904,7 +904,7 @@ export default class ServerToClientAPI {
             .catch((error: Error) => ({error}))
             .then((result: Result<string>) => {
               this.postMessage({
-                type: 'generatedAICommitMessage',
+                type: 'generatedSuggestionWithAI',
                 message: result,
                 id: data.id,
               });

addons/isl/src/types.ts

@@ -876,7 +876,7 @@ export type ServerToClientMessage =
   | {type: 'fetchedFeatureFlag'; name: string; passes: boolean}
   | {type: 'fetchedInternalUserInfo'; info: Serializable}
   | {
-      type: 'generatedAICommitMessage';
+      type: 'generatedSuggestionWithAI';
       message: Result<string>;
       id: string;
     }