Filter resource entities by prototype type, not collision layer

Caught by another in-game crash: "Entity is not resource." when
reading entity.amount. The previous fix (collision_mask: "resource")
was still wrong - collision layers and entity type are decoupled in
Factorio 2.0, so find_entities_filtered({collision_mask: "resource"})
can return non-resource entities that merely opted into the same
collision layer (likely something from Space Exploration or
Krastorio 2). entity.amount/initial_amount only exist on entities
whose prototype type is actually "resource".

Filtering by type: "resource" directly targets the right entities
and is simpler than inferring it via collision mask in the first
place.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

modules/events-mod/src/main/typescript/main/events/handlers/EntityUpdateHandler.ts

@@ -210,7 +210,7 @@ export class EntityUpdatesHandler {
   ): LuaEntity[] {
     return surface.find_entities_filtered({
           position: mapPosition,
-          collision_mask: "resource",
+          type: "resource",
         }
     )
   }
@@ -223,7 +223,7 @@ export class EntityUpdatesHandler {
   ): LuaEntity[] {
     return surface.find_entities_filtered({
           area: area,
-          collision_mask: "resource",
+          type: "resource",
         }
     )
   }