highlight(scala): highlight abstract methods in traits and classes (#9340)

runtime/queries/scala/highlights.scm

@@ -57,13 +57,21 @@
 
 (class_definition
   body: (template_body
+    [
       (function_definition
-      name: (identifier) @function.method)))
+        name: (identifier) @function.method)
-(object_definition
+      (function_declaration
+        name: (identifier) @function.method)
+    ]))
+(trait_definition
   body: (template_body
+    [
       (function_definition
-      name: (identifier) @function.method)))
+        name: (identifier) @function.method)
-(trait_definition
+      (function_declaration
+        name: (identifier) @function.method)
+    ]))
+(object_definition
   body: (template_body
     (function_definition
       name: (identifier) @function.method)))