Describe the bug

setPrefixedStyle in styleUtils.ts uses style.setProperty(name, value), but that function requires kebab-case/hyphen case property names (e.g. transform-origin). The only camelCase call site is setPrefixedStyle(this.textarea.style, 'transformOrigin', '0px 0px') in CellEditorHandler.ts, which is a silent no-op. This was introduced in commit 61648e4, which changed setPrefixedStyle from style[name] = value (accepts camelCase) to style.setProperty(name, value) (requires kebab-case).

To Reproduce

Steps to reproduce the behavior:

1. Create a graph with at least one vertex
2. Zoom to a non-1x level
3. Double-click a cell to start editing
4. The editor overlay is visibly offset from the cell label

Expected behavior

transform-origin: 0px 0px should be applied to the cell editor textarea. The editor overlay should align with the cell label at all zoom levels. This likely worked correctly in mxGraph.

Screenshots

N/A

Environment

• maxGraph version or commit: present on current main
• Desktop or mobile: Desktop
• OS and version: Linux
• Browser and version: Latest Chromium

Additional context

Simplest fix is probably to change the call site to kebab-case/hyphen case: setPrefixedStyle(this.textarea.style, 'transform-origin', '0px 0px');.