touchStarted triggers twice among other issues with touchStarted/mousePressed on mobile

[RandomGamingDev]

Most appropriate sub-area of p5.js?

• Accessibility
• Color
• Core/Environment/Rendering
• Data
• DOM
• Events
• Image
• IO
• Math
• Typography
• Utilities
• WebGL
• Build Process
• Unit Testing
• Internalization
• Friendly Errors
• Other (specify if possible)

p5.js version

1.9.0

Web browser and version

120.0.6099.210

Operating System

Android

Steps to reproduce this

Steps:

1. Have touchStarted() or mousePressed() on mobile

Snippet:

Here's a sketch demonstrating it:
https://editor.p5js.org/PotatoBoy/sketches/1F9s-k_5D

On touchscreen:

• mousePressed and touchStarted both trigger if they're both present (same for mousePressed)
• If either is without the other it triggers twice
• touchStarted doesn'tt get called when the mouse is pressed like described in the documentation

Note: This looks like nearly the same issue with #6737. We might have to check if this sort of issue applies to any other event listeners. For now, I'll list these 2 as separate issues and pull requests since I already created the first pair.