fix: do not pass execArgv to ngcc process

Ngcc process will fail when the debugger is already attached to the main
process because it inherits `execArgv` from the parent process by
default.

Author: Keen Yee Liau

server/src/ngcc.ts

@@ -48,6 +48,7 @@ export async function resolveAndRunNgcc(tsconfig: string, progress: Progress): P
       {
         cwd: resolve(cwd),
         silent: true,  // pipe stderr and stdout so that we can report progress
+        execArgv: [],  // do not inherit flags like --inspect from parent process
       });
 
   let stderr = '';