Read aloud not working on browsers missing voices

**Description**

> What problem are we solving? What does the experience look like today? What are the symptoms? How can one reproduce the problem?

Clicking on the headphones icon highlights the first sentence on the open page, and then does nothing. Tried in firefox on linux, brave on linux and in firefox on android.

**Evidence / Screenshot (if possible)**

> Include evidence of the problem or provide a screenshot.


it just hangs there forever

**Expectation**

> What should be happening? What will it look like / how will it behave when fixed?

I guess a voice should start reading the book

**Context**

> What operating system? What browser type and version?

Mozilla Firefox 107.0

Brave Browser 107.1.45.127

5.15.78-1-MANJARO

**Proposal & Constraints**

> What is the proposed solution / implementation? Is there a precedent of this approach succeeding elsewhere?

**Stakeholders**

> @-tag any stakeholders of this bug