docs: Remove obsolete supportsCSSTransform option from canvas docs (#2112)

The supportsCSSTransform option is no longer present in the CanvasConfig interface. This commit removes the corresponding documentation from both the English and Chinese API documents to align them with the current codebase.

Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>

Author: google-labs-jules[bot]

site/docs/api/canvas/options.en.md

@@ -177,19 +177,6 @@ const canvas = new Canvas({
 });
 ```
 
-### supportsCSSTransform
-
-Optional. 是否支持在容器上应用 CSS Transform 的情况下确保交互事件坐标转换正确。
-
-Whether or not CSS Transform is supported on the container to ensure that the interaction event coordinates are transformed correctly.
-
-In this [example](/en/examples/canvas/container/#supports-css-transform), we have enlarged the container by a factor of 1.1, and with this configuration enabled, mouse movement over the circle changes the mouse style correctly.
-
-```js
-const $wrapper = document.getElementById('container');
-$wrapper.style.transform = 'scale(1.1)';
-```
-
 ### supportsPointerEvents
 
 Optional. Whether PointerEvent is supported or not, the default will use `! !globalThis.PointerEvent`. If `false` is passed, the event listener plugin will not listen for PointerEvent such as `pointerdown`.

site/docs/api/canvas/options.zh.md

@@ -184,17 +184,6 @@ const canvas = new Canvas({
 });
 ```
 
-### supportsCSSTransform
-
-可选。是否支持在容器上应用 CSS Transform 的情况下确保交互事件坐标转换正确。
-
-在该 [示例](/examples/canvas/container/#supports-css-transform) 中，我们将容器放大了 1.1 倍，开启该配置项后，鼠标移动到圆上可以正确变化鼠标样式：
-
-```js
-const $wrapper = document.getElementById('container');
-$wrapper.style.transform = 'scale(1.1)';
-```
-
 ### supportsPointerEvents
 
 可选。是否支持 PointerEvent，默认将使用 `!!globalThis.PointerEvent` 判断。如果传入 `false`，事件监听插件将不会监听例如 `pointerdown` 等 PointerEvent。