Attach (recommended) or Link to PDF file here:

Configuration:
- Web browser and its version: firefox 96.0
- Operating system and its version: Arch linux, sway (wayland)
- PDF.js version: Whatever came with the browser
- Is a browser extension: no

Steps to reproduce the problem:
1. Open any pdf, can reproduce it on https://mozilla.github.io/pdf.js/web/viewer.html
2. Scroll in with ctrl+mouse wheel using a normal mouse, not a touch pad.

Expected behaviour:
It zooms in with small steps. It can for example be the same steps as ctrl+plus.

Behaviour:
It scrolls in and out way to quickly. It jumps in the steps: 10%, 70%, 150%, 300%, 570%, 1000%.

Notes:
Cannot reproduce on chromium with the web viewer on https://mozilla.github.io/pdf.js/web/viewer.html
PDFViewerApplication.page = PDFViewerApplication.pagesCount;
          handled = true;
          ensureViewerFocused = true;
        }
        break;
    }
  }
  if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC || CHROME")) {
    
    if (cmd === 1 || cmd === 8) {
      switch (evt.keyCode) {
        case 83: 
          eventBus.dispatch("download", { source: window });
          handled = true;
          break;
        case 79: 
          if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
            eventBus.dispatch("openfile", { source: window });
            handled = true;
          }
          break;
      }
    }
  }
  
  if (cmd === 3 || cmd === 10) {
    switch (evt.keyCode) {
      case 80: 
        PDFViewerApplication.requestPresentationMode();
        handled = true;