[java-decompiler] don't initialize AnAction presentation in constructor

Fix warning from DevKit inspection `ActionPresentationInstantiatedInCtor`.

GitOrigin-RevId: ea8328fe498d95f9272759e149f794cea7ecf07d

plugins/java-decompiler/plugin/resources/META-INF/plugin.xml

@@ -44,7 +44,11 @@
 
   <actions>
     <group id="idea.java.decompiler.action.group">
-      <action id="ByteCodeDecompiler" class="org.jetbrains.java.decompiler.ShowDecompiledClassAction"/>
+      <action 
+        id="ByteCodeDecompiler"
+        class="org.jetbrains.java.decompiler.ShowDecompiledClassAction"
+        icon="AllIcons.FileTypes.JavaClass"
+      />
       <add-to-group group-id="QuickActions" anchor="after" relative-to-action="QuickJavaDoc"/>
     </group>
   </actions>

plugins/java-decompiler/plugin/resources/messages/IdeaDecompilerBundle.properties

@@ -23,7 +23,7 @@ decompiler.preset.high.description=Maximal readability
 decompiler.preset.medium.description=Preserve synthetic code
 decompiler.preset.low.description=Closer to bytecode
 
-action.show.decompiled.name=Show Decompiled Class
+action.ByteCodeDecompiler.text=Show Decompiled Class
 
 decompiling.progress=Decompiling {0}
 

plugins/java-decompiler/plugin/src/org/jetbrains/java/decompiler/ShowDecompiledClassAction.kt

@@ -15,7 +15,7 @@ import com.intellij.psi.PsiElement
 import com.intellij.psi.util.PsiTreeUtil
 import com.intellij.psi.util.PsiUtilBase
 
-class ShowDecompiledClassAction : AnAction(IdeaDecompilerBundle.message("action.show.decompiled.name")) {
+class ShowDecompiledClassAction : AnAction() {
 
   override fun getActionUpdateThread(): ActionUpdateThread = ActionUpdateThread.BGT