fix: change filePath to fileDiagnostics in CheckDiagnostics interface

Author: MarcoWang3

packages/amazonq/src/lsp/chat/messages.ts

@@ -568,7 +568,7 @@ export function registerMessageListeners(
     languageClient.onRequest(CheckDiagnosticsRequestType.method, async (params: CheckDiagnosticsParams) => {
         const result: Record<string, DiagnosticInfo[]> = {}
 
-        for (const [filePath, diagnosticJson] of Object.entries(params.filePath)) {
+        for (const [filePath, diagnosticJson] of Object.entries(params.fileDiagnostics)) {
             try {
                 const uri = vscode.Uri.file(filePath)
                 const diagnostics = vscode.languages.getDiagnostics(uri)
@@ -601,7 +601,7 @@ export function registerMessageListeners(
                 result[filePath] = diagnosticJson || []
             }
         }
-        return { filePath: result }
+        return { fileDiagnostics: result }
     })
 
     // Register openWorkspaceFile handler