Refine Sorter's Rubric type (#1765)

## Summary:
As part of the Server Side Scoring project, this refactors Sorter's Rubric type to only contain data necessary for scoring. It also updates the tests to reflect this new type.

Issue: LEMS-2472

## Test plan:
- Confirm all checks pass
- Confirm Sorter widget still works as expected via Storybook

Author: Myranae

Reviewers: handeyeco, Myranae

Required Reviewers:

Approved By: handeyeco

Checks: ✅ Publish npm snapshot (ubuntu-latest, 20.x), ✅ Check builds for changes in size (ubuntu-latest, 20.x), ✅ Lint, Typecheck, Format, and Test (ubuntu-latest, 20.x), ✅ Cypress (ubuntu-latest, 20.x), ✅ Check for .changeset entries for all changed files (ubuntu-latest, 20.x), ✅ Publish Storybook to Chromatic (ubuntu-latest, 20.x), ✅ gerald

Pull Request URL: #1765

.changeset/hip-countries-behave.md

@@ -0,0 +1,5 @@
+---
+"@khanacademy/perseus": patch
+---
+
+Refine Sorter's Rubric type

packages/perseus/src/validation.types.ts

@@ -13,7 +13,6 @@ import type {
     PerseusOrdererWidgetOptions,
     PerseusPlotterWidgetOptions,
     PerseusRadioWidgetOptions,
-    PerseusSorterWidgetOptions,
     PerseusTableWidgetOptions,
 } from "./perseus-types";
 import type {InteractiveMarkerType} from "./widgets/label-image/types";
@@ -171,7 +170,10 @@ export type PerseusRadioUserInput = {
     noneOfTheAboveSelected?: boolean;
 };
 
-export type PerseusSorterRubric = PerseusSorterWidgetOptions;
+export type PerseusSorterRubric = {
+    // Translatable Text; The correct answer (in the correct order). The user will see the cards in a randomized order.
+    correct: ReadonlyArray<string>;
+};
 
 export type PerseusSorterUserInput = {
     options: ReadonlyArray<string>;

packages/perseus/src/widgets/sorter/sorter-validator.test.ts

@@ -12,8 +12,6 @@ describe("SorterValidator", () => {
             changed: true,
         };
         const rubric: PerseusSorterRubric = {
-            padding: true,
-            layout: "horizontal",
             correct: ["$0.005$ kilograms", "$15$ grams", "$55$ grams"],
         };
         const result = sorterValidator(userInput, rubric);
@@ -26,8 +24,6 @@ describe("SorterValidator", () => {
             changed: true,
         };
         const rubric: PerseusSorterRubric = {
-            padding: true,
-            layout: "horizontal",
             correct: ["$0.005$ kilograms", "$15$ grams", "$55$ grams"],
         };
         const result = sorterValidator(userInput, rubric);
@@ -40,8 +36,6 @@ describe("SorterValidator", () => {
             changed: false,
         };
         const rubric: PerseusSorterRubric = {
-            padding: true,
-            layout: "horizontal",
             correct: ["$0.005$ kilograms", "$15$ grams", "$55$ grams"],
         };
         const result = sorterValidator(userInput, rubric);