Render to a new file name stores resources in directory with name of qmd file

Bug description

When rendering a qmd file from the command line the resources folder is named after the qmd file, rather than the html output. This makes it impossible to parameterise output file names.

Render from the command line (Ubuntu 20.04):

quarto render test.qmd --output test_1.html

---
title: "param test"
format: html
editor: source
params:
  x: 10
  y: 0.5
---

## Quarto

Quarto enables you to weave together content and executable code into a finished document. To learn more about Quarto see <https://quarto.org>.

## Running Code

* The param x is `r params$x`
* The param y is `r params$y`


```{r}
plot(rnorm(n = params$x,
           mean = params$y))
```

Checklist

• Please include a minimal, fully reproducible example in a single .qmd file? Please provide the whole file rather than the snippet you believe is causing the issue.
• Please format your issue so it is easier for us to read the bug report.
• Please document the RStudio IDE version you're running (if applicable), by providing the value displayed in the "About RStudio" main menu dialog?
• Please document the operating system you're running. If on Linux, please provide the specific distribution.