Play/Pause :: Delayed on Slow Networks

### Description

The Play/Pause Button is delayed on slow networks. This is to be expected, but it would be nice if we could slow a loading icon when the network is slow and buffering is occurring.

8863975-zd-a8c

### Step-by-step reproduction instructions

1. Use Pocket Casts on a slow network
2. Attempt to play/pause episodes
3. Notice it has a delay

### Screenshots or screen recording

_No response_

### Did you search for existing bug reports?

- [x] I have searched for existing bug reports.

### Device, Operating system, and Pocket Casts app version

Samsung Fold 4, Android 14, Pocket Casts v7.74-rc-1

The issue names no files or tests. Start by reproducing playback on a slow network with the listed Samsung Fold 4, Android 14, and Pocket Casts version, then trace the play/pause and buffering entry points. Done means a loading indicator appears while playback is delayed by buffering.

Written by the indexing model from the issue text.