Custom headers are ignored

[iamalismith]

Current Behavior

Adding a pingServerUrl and customHeaders object does not result in the custom headers being sent with the ping request.

<NetworkProvider
    pingServerUrl={`https://pingurl.com/ping`}
    customHeaders={{ 'any-custom-header': 'xyz' }}
  >

Expected Behavior

Adding custom headers attaches those headers to the requests that check the internetConnectivity

How to reproduce

add customHeaders prop and a pingServerUrl

<NetworkProvider
    pingServerUrl={`https://pingurl.com/ping`}
    customHeaders={{ 'any-custom-header': 'xyz' }}
  >

Observe that pings do not contain the headers as expected.

Your Environment

software	version
react-native-offline	6.0.2
react-native	0.71
node	16
npm or yarn	yarn