Can't drag dropper while it dispenses

[KatieWoe]

Test device:
Dell
Operating System:
Win 10 (or any)
Browser:
chrome (or any)
Problem description:
For phetsims/qa#323 and phetsims/qa#326.
In the published version of the sim you can activate the dropper and drag it around at the same time. You can do this with both the mouse and touch. In the rc, you can't drag the dropper while it is active with the mouse, but you can with touch. Nothing major, but it seems like an odd inconstancy.
Steps to reproduce:

1. Go to a screen with a dropper
2. Use the mouse to push and hold the button that starts the dropper
3. While dispensing, try to move the dropper left and right.

Screenshots:

Troubleshooting information (do not edit):

Name: ‪pH Scale: Basics‬
URL: https://phet-dev.colorado.edu/html/ph-scale-basics/1.3.0-rc.1/phet/ph-scale-basics_all_phet.html
Version: 1.3.0-rc.1 2019-05-24 13:37:56 UTC
Features missing: touch
Flags: pixelRatioScaling
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36
Language: en-US
Window: 1536x722
Pixel Ratio: 2.5/1
WebGL: WebGL 1.0 (OpenGL ES 2.0 Chromium)
GLSL: WebGL GLSL ES 1.0 (OpenGL ES GLSL ES 1.0 Chromium)
Vendor: WebKit (WebKit WebGL)
Vertex: attribs: 16 varying: 30 uniform: 4096
Texture: size: 16384 imageUnits: 16 (vertex: 16, combined: 32)
Max viewport: 16384x16384
OES_texture_float: true
Dependencies JSON: {}

[pixelzoom]

Reproduced with macOS 10.14.5 + Chrome latest, and it doesn't seem to be platform specific.

The implementation of PHDropperNode has not changed. My guess is the the toggle button on EyeDropperNode has a new-style input listener (PressListener) that is behaving differently and causing the drag listener (MovableDragHandler) not to get events. I'll need @jonathanolson's help on this.

[jonathanolson]

The problem is that most drag/button listeners are set up so that they "attach" to the pointer, locking out other drag/button listeners from starting the interaction. This looks like a case where we want to enable that (e.g. to press attach:false to the button's PressListener).

There was no supported way to pass listeners to the created PressListener for buttons, so I added listenerOptions, and then added the flag in EyeDropperNode.

@pixelzoom can you test/review?

[pixelzoom]

Looks like this is working in master. @KatieWoe please verify, change to "fixed-awaiting-deploy" if it looks OK.

[KatieWoe]

This looks good on master

[pixelzoom]

Next step is to pick up:

• phetsims/scenery-phet@272d488 in "ph-scale-1.3" branch of scenery-phet
• phetsims/sun@7f26ea5 is "ph-scale-1.3" branch of sun.

[pixelzoom]

Patched in "ph-scale-1.3" branches for scenery-phet and sun, ready to test in upcoming 1.3.0-rc.2.

[pixelzoom]

Talked with @jonathanolson. I should also create and patch "ph-scale-basics-1.3" branches for scenery-phet and sun.

[pixelzoom]

Manually patched in "ph-scale-basics-1.3" branches for scenery-phet and sun.

[pixelzoom]

Verified by QA in phetsims/qa#374 and phetsims/qa#375, closing.