Support for showing two and more text results separatly

I am not sure, that this is bug, maybe this is expected behaviour.
But, in `Notebook.ipynb` I have code cell with two text results
````json
{
"cell_type": "code",
"execution_count": null,
"metadata": {
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"7"
]
},
{
"name": "stdout",
"output_type": "stream",
"text": [
"8"
]
}
],
"source": "a:7; b:8;"
}
````
As you see, two text resutls.

But when I open the notebook in my Jupyter Notebook `v5.7.8`, I see them merged into one result.

So it should be? And there is a way to show them separetly?

Reproduce the behavior by opening the provided Notebook.ipynb in Jupyter Notebook v5.7.8 and inspecting how its two stdout entries are rendered. Determine whether separate display is intended, then verify that the two text results appear separately if support is added.

Written by the indexing model from the issue text.