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
case 70: 
        if (!PDFViewerApplication.supportsIntegratedFind && !evt.shiftKey) {
          PDFViewerApplication.findBar.open();
          handled = true;
        }
        break;
      case 71: 
        if (!PDFViewerApplication.supportsIntegratedFind) {
          const { state } = PDFViewerApplication.findController;
          if (state) {
            const eventState = Object.assign(Object.create(null), state, {
              source: window,
              type: "again",
              findPrevious: cmd === 5 || cmd === 12,
            });
            eventBus.dispatch("find", eventState);
          }
          handled = true;
        }
        break;
      case 61: 
      case 107: 
      case 187: 
      case 171: 
        if (!isViewerInPresentationMode) {
          PDFViewerApplication.zoomIn();
        }
        handled = true;
        break;
      case 173: