[BUG]: Mobile data message is not shown when the Wifi is turned off while play audio

[cam-pinheiro]

Describe the bug

When the Learner is playing a Lesson with the audio and the Wifi is turned off, the Learner should be get a prompt on trying to play audio on cellular data, but it is not happen.
The "currently on cellular data " message is shown only if the Learner starts playing the audio using celular data since from the beginning, if the Learner starts playing audio with Wifi and this turned off, the audio continues playing even when the Learner goes to the next page.

Steps To Reproduce

With Wifi conection

1. Go to Place Values
2. Go to What are the Place Values?
3. Play the audio
4. Turn off the Wifi
5. Keep the audio playing
6. Click on the continue button
7. The audio continue playing and the mobile data message is not shown

Expected Behavior

it is expected to see a cellular data message when the Wifi is turned off while play audio.

Screenshots/Videos

When the Wifi conection is turned off

Record_2025-03-31-11-59-19.mp4

With mobile data ( it is working!) this is the message that I expected to see if the wifi conection is cut for some reason.

Record_2025-03-31-12-00-30.mp4

What device/emulator are you using?

OPPO A79 5G

Which Android version is your device/emulator running?

Android 14

Which version of the Oppia Android app are you using?

0.15-beta-9404ea41d9

Additional Context

No response