[amp-accordion] Sections in accordion are not expanding

### Description

User should be able to expand sections in dynamic accordion upon a click. Read the repro steps below for the details

### Reproduction Steps

Testing environment:
Safari Version 15.5 (17613.2.7.1.8)

**Steps to repro:**

1. Open Safari browser on macbook device;
2. Open test link: https://playground.amp.dev/?url=https%3A%2F%2Fpreview.amp.dev%2Fdocumentation%2Fexamples%2Finteractivity-dynamic-content%2Fdynamic_accordion&format=websites
3. Try tapping on sections with the names of continents
4. See the result

**Actual Result:** sections with the name of continents are not expanding upon a click

**Expected Result:** sections should expand and display the content

**NOTE!!!** Problem appears only on the Safari Desktop browser

Screenshot:

### Relevant Logs

_No response_

### Browser(s) Affected

Safari

### OS(s) Affected

_No response_

### Device(s) Affected

_No response_

### AMP Version Affected

_No response_

Start by reproducing the failure in Safari Desktop using the dynamic accordion test link in the issue, then locate the amp-accordion implementation responsible for handling section clicks. Done means continent sections expand on click and display their content in Safari without breaking the existing behavior.

Written by the indexing model from the issue text.