【CSP once is not effective 】util/src/Dom/dynamicCSS injectCSS function with csp bug,Style.once is not effective

[shentao1]

util/src/Dom/dynamicCSS injectCSS function ，Style.once only assigns attributes and is still blocked by CSP policies. Style.setAttribute should be used to set nonce to the dom tree.

The following example also illustrates that using. xx assignment does not reflect on the dom tree, and using setAttribute will reflect on the dom tree

[shentao1]

This bug also exists here

[dVerhees]

I believe this is a duplicate of #392