First message wrong encoding with Java 21

Using Zowe v3.3.1 (and v3.4.0rc3), the first messages of APIML are unreadable when using java 21, but are fine on java 17.

https://github.com/zowe/api-layer/blob/4c515e4c040da58d93b490c418e94ed9f2816772/common-service-core/src/main/java/org/zowe/apiml/product/version/BuildInfo.java#L43

This line is producing the problem message.
But it's using org.zowe.apiml.message.log.ApimlLogger which appears to work on every later message.
So... this is some weird startup-only behavior of ApimlLogger + J21?

When investigating, the UTF8 change in J21 caught attention
https://www.ibm.com/docs/en/semeru-runtime-ce-z/21.0.0?topic=guide-file-encoding-utf-8-as-default-charset

I noticed that apiml has been UTF8 for file.encoding longer than j21, but the link notes that there can be different behavior for console input/output. Is that accommodated in the logger?

Here's a screenshot of what the difference looks like. Later logs look identical.