Removing the timeout logic from raw-response functions and adding documentation comments. The following functions are affected:
- `ReadRaw`
- `ReadRawWithContext` (newly added)
- `ReadRawWithData`
- `ReadRawWithDataWithContext`
The previous logic of using `ctx, _ = c.c.withConfiguredTimeout(ctx)` could cause a potential [context leak](https://pkg.go.dev/context):
> Failing to call the CancelFunc leaks the child and its children until the parent is canceled or the timer fires. The go vet tool checks that CancelFuncs are used on all control-flow paths.
Cancelling the context would have caused more issues since the context would be cancelled before the request body is closed.
Resolves: #18658
a4973bc45a