quarto install tinytex: post install handing

Move 

`"quarto install tinytex" ` 

to

```
"vscode": {
			"extensions": [
				"ms-python.python",
				"ms-toolsai.jupyter",
				"donjayamanne.vscode-default-python-kernel"
				"quarto install tinytex"  
			]
```

and out of the post install section.

This fixed the install hang.