Solve the bug where iOS physical device was not detected

Summary:
As per the title

Bug:

{F288338655}

Reviewed By: mweststrate

Differential Revision: D23168390

fbshipit-source-id: e57ac1f22c0a3932fe9948d16cf9fc9cc74ab636

desktop/app/src/utils/iOSContainerUtility.tsx

@@ -64,6 +64,7 @@ async function targets(idbPath: string): Promise<Array<DeviceTarget>> {
     return safeExec(`${idbPath} list-targets --json`).then(({stdout}) =>
       stdout
         .toString()
+        .trim()
         .split('\n')
         .map((line) => line.trim())
         .map((line) => JSON.parse(line))