Avoid .innerHTML sink for Trusted Types compatibility.
#315
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`.innerHTML` is considered a [HTML injection sink sink](https://w3c.github.io/webappsec-trusted-types/dist/spec/#html-injection-sinks) in Trusted Types. Replacing `.innerHTML` with the functionally equivalent `.textContent` for style elements should avoid Trusted Types violations.
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.innerHTMLis considered a HTML injection sink sink in Trusted Types. Replacing.innerHTMLwith the functionally equivalent.textContentfor style elements should avoid Trusted Types violations.