Revert "feat: inheritance should work with computed (#3950)"

This reverts commit c5be226.

Author: mweststrate

packages/mobx/__tests__/decorators_20223/stage3-decorators.ts

@@ -1115,22 +1115,3 @@ test(`decorated field can be inherited, but doesn't inherite the effect of decor
     const subStore = new SubStore()
     expect(isAction(subStore.action)).toBe(false)
 })
-
-test(`inheritance should work with computed`, () => {
-    class Store {
-        @computed
-        get getNumber() {
-            return 1
-        }
-    }
-
-    class SubStore extends Store {
-        @computed
-        override get getNumber() {
-            return super.getNumber + 1
-        }
-    }
-
-    const store = new SubStore()
-    expect(store.getNumber).toBe(2)
-})

packages/mobx/src/types/computedannotation.ts

@@ -64,13 +64,11 @@ function decorate_20223_(this: Annotation, get, context: ClassGetterDecoratorCon
         options.name ||= __DEV__
             ? `${adm.name_}.${key.toString()}`
             : `ObservableObject.${key.toString()}`
-        const computedValue = new ComputedValue(options)
-        adm.values_.set(key, computedValue)
-        adm.values_.set(get, computedValue)
+        adm.values_.set(key, new ComputedValue(options))
     })
 
     return function () {
-        return this[$mobx].getObservablePropValue_(get)
+        return this[$mobx].getObservablePropValue_(key)
     }
 }