docs(changeset): Update accessibility status for Perseus Widgets previously inaccessible (#2620)

## Summary:
Updated the accessibility field for the following Perseus widgets to align with our [Widget Fundamentals](https://khanacademy.atlassian.net/wiki/spaces/LC/pages/1909489691/Widget+Fundamentals) documentation:

- Graded Group
- Graded Group Set
- Python Program
- Video

Issue: LEMS-3196

## Test plan:

Author: tatianasnook

Reviewers: jeremywiebe, catandthemachines

Required Reviewers:

Approved By: jeremywiebe, catandthemachines

Checks: ✅ 8 checks were successful

Pull Request URL: #2620

Author: tatianasnook

.changeset/young-pandas-build.md

@@ -0,0 +1,5 @@
+---
+"@khanacademy/perseus-core": patch
+---
+
+Update accessibility status for Perseus Widgets previously inaccessible

packages/perseus-core/src/widgets/graded-group-set/index.ts

@@ -17,7 +17,7 @@ const traverseChildWidgets = function (props: any, traverseRenderer: any): any {
 const gradedGroupSetWidgetLogic: WidgetLogic = {
     name: "graded-group-set",
     defaultWidgetOptions,
-    accessible: false,
+    accessible: true,
     traverseChildWidgets: traverseChildWidgets,
 };
 

packages/perseus-core/src/widgets/graded-group/index.ts

@@ -21,7 +21,7 @@ const traverseChildWidgets = function (props: any, traverseRenderer: any): any {
 const gradedGroupWidgetLogic: WidgetLogic = {
     name: "graded-group",
     defaultWidgetOptions,
-    accessible: false,
+    accessible: true,
     traverseChildWidgets: traverseChildWidgets,
 };
 

packages/perseus-core/src/widgets/python-program/index.ts

@@ -14,7 +14,7 @@ const defaultWidgetOptions: PythonProgramDefaultWidgetOptions = {
 const pythonProgramWidgetLogic: WidgetLogic = {
     name: "python-program",
     defaultWidgetOptions,
-    accessible: false,
+    accessible: true,
 };
 
 export default pythonProgramWidgetLogic;

packages/perseus-core/src/widgets/video/index.ts

@@ -15,7 +15,7 @@ const videoWidgetLogic: WidgetLogic = {
     defaultWidgetOptions,
     supportedAlignments: ["block", "float-left", "float-right", "full-width"],
     defaultAlignment: "block",
-    accessible: false,
+    accessible: true,
 };
 
 export default videoWidgetLogic;