embed-resources breaks title-slide-attributes in revealjs

Bug description

Not sure if this is a quarto bug or revealjs bug. Using both title-slide-attributes and embed-resources/self-contained breaks the visuals of the presentation, shows title on all the slides and the first 2 slides get combined.

Steps to reproduce

Changin embed-resources from false to true breaks both the visuals and also the 2 slides are combined into one.

---
title: "Test Presentation"
format: 
  revealjs:
    embed-resources: false
    title-slide-attributes: 
      data-background-image: "https://placeholder.pics/svg/100, https://placeholder.pics/svg/100,https://placeholder.pics/svg/100, https://picsum.photos/id/870/800/600?grayscale"
      data-background-size: 100px, 100px, 100px, cover
      data-background-position: "2% 98%, 50% 98%, 98% 98%, center"
editor: source
---

## Second slide
something something

Expected behavior

embed-resources: true should not break other things.

Actual behavior

No response

Your environment

• IDE: VSCode 1.83.1
• Windows 10

Quarto check output

Quarto 1.4.418
[>] Checking versions of quarto binary dependencies...
      Pandoc version 3.1.8: OK
      Dart Sass version 1.55.0: OK
      Deno version 1.33.4: OK
[>] Checking versions of quarto dependencies......OK
[>] Checking Quarto installation......OK
      Version: 1.4.418
      Path: C:\Users\jakub.kovac\AppData\Local\Programs\Quarto\bin
      CodePage: 1252

[>] Checking tools....................OK
      TinyTeX: v2023.05
      Chromium: (not installed)

[>] Checking LaTeX....................OK
      Using: TinyTex
      Path: C:\Users\jakub.kovac\AppData\Roaming\TinyTeX\bin\windows\
      Version: 2023

[>] Checking basic markdown render....OK

[>] Checking Python 3 installation....(None)

      Unable to locate an installed version of Python 3.
      Install Python 3 from https://www.python.org/downloads/

[>] Checking R installation...........OK
      Version: 4.3.1
      Path: C:/Users/jakub.kovac/AppData/Local/Programs/R/R-4.3.1
      LibPaths:
        - C:/Users/jakub.kovac/AppData/Local/Programs/R/R-4.3.1/library
      knitr: 1.44
      rmarkdown: 2.25

[>] Checking Knitr engine render......OK