The R2021a release notes say
Java Packages to be removed
Java® packages and subpackages that currently ship with MATLAB will not be available in MATLAB in a future release.
Compatibility Considerations
To continue using a Java package, install its JAR file and add the JAR file to the static path in MATLAB using the instructions in Static Path.
imclipboard uses java.awt.* which I would think it is very likely to contiue to be supported.
The R2024b Pre-release release notes do not warn about any upcoming changes in Java support, so I have my doubts that there is any significant change in R2025a.