layer.conf: Add meta-java dependency

We cannot even parse the recipes without meta-java, as we use java.bbclass.

Signed-off-by: Esben Haabendal <esben.haabendal@huawei.com>

conf/layer.conf

@@ -18,5 +18,6 @@ LAYERDEPENDS_meta-openharmony += "openembedded-layer"
 LAYERDEPENDS_meta-openharmony += "oniro-staging"
 LAYERDEPENDS_meta-openharmony += "meta-python"
 LAYERDEPENDS_meta-openharmony += "clang-layer"
+LAYERDEPENDS_meta-openharmony += "meta-java"
 
 LAYERSERIES_COMPAT_meta-openharmony = "kirkstone"