Fix MessageBundle key/file name resolver algorithm #39828

Build scans

You will find below links to the Develocity build scans for this workflow run.

Status	Name	Build scan
✔️	Initial JDK 17 Build	🔍
✔️	JVM Tests - JDK 17	🔍
✔️	JVM Tests - JDK 21	🔍
✔️	JVM Tests - JDK 17 Windows	🔍
✔️	Maven Tests - JDK 17	🔍
✔️	Maven Tests - JDK 17 Windows	🔍
✔️	Native Tests - Misc1	🔍
✔️	Native Tests - Misc2	🔍
✔️	Native Tests - Virtual Thread - Main	🔍