Launching doesn't resume at correct sample # if on an earlier sample

[Nancy-Salpepi]

Test device
MacBook Air M1 chip

Operating System
14.4.1

Browser
Chrome

Problem description
For phetsims/qa#1068, on the Sampling Screen:
If I am on an earlier sample, ex. 2 or 30, pressing the launch button again will not resume sampling at 31. Instead it will resume at sample 3 of 30.

Steps to reproduce

1. On the Sampling screen, select Continuous mode and then press the Launch button to produce a bunch of samples
2. Press the Stop button
3. Use the decrement button to select an earlier sample
4. Press the Launch button again.

Visuals

SamplingScreenBug.mp4

Troubleshooting information: !!!!! DO NOT EDIT !!!!! Name: ‪Projectile Data Lab‬ URL: https://phet-dev.colorado.edu/html/projectile-data-lab/1.0.0-rc.1/phet/projectile-data-lab_all_phet.html Version: 1.0.0-rc.1 2024-04-09 18:41:49 UTC Features missing: applicationcache, applicationcache, touch Flags: pixelRatioScaling User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36 Language: en-US Window: 1308x720 Pixel Ratio: 2/1 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: 1024 Texture: size: 16384 imageUnits: 16 (vertex: 16, combined: 32) Max viewport: 16384x16384 OES_texture_float: true Dependencies JSON: {}

[matthew-blackman]

Good find @Nancy-Salpepi! This ended up being more straightforward to fix than I initially thought. Can you confirm that it's fixed on main?

[Nancy-Salpepi]

Looks good on main!

[matthew-blackman]

Please close after verifying.

[KatieWoe]

Looks good in rc.2