6.12弹出对话框，计算高度异常

[warning5]

描述问题：

6.12弹出对话框，计算高度异常，换成6.11没有问题

Uncaught TypeError: Cannot read properties of null (reading 'getBoundingClientRect')
at amis.define.e.calculateHeight (sdk.js:1880:852)
at t.handleHeight (rest.js:841:1260)
at rest.js:841:1007
at ResizeObserver. (sdk.js:1896:3047)