[Interactive Graph] Handle autogen aria label for open locked points (#3042)

## Summary:
There was no indication about locked points being open in the autogen aria label.

Adding that here.

Issue: none

## Test plan:
`pnpm jest packages/perseus-editor/src/widgets/interactive-graph-editor/locked-figures/locked-point-settings.test.tsx`

Storybook
`/?path=/docs/widgets-interactive-graph-editor-demo--docs#locked-figures`

| Before | After |
| --- | --- |
| <img width="346" height="392" alt="Screenshot 2025-11-17 at 3 00 59 PM" src="https://github.com/user-attachments/assets/40bc6baf-c8fc-495f-b757-9ee03f2bbaa1" /> | <img width="341" height="390" alt="Screenshot 2025-11-17 at 3 01 07 PM" src="https://github.com/user-attachments/assets/dfa33563-9170-4a69-8094-58b6ae0aba9a" /> |

Author: nishasy

Reviewers: ivyolamit

Required Reviewers:

Approved By: ivyolamit

Checks: ⏭️  1 check has been skipped, ✅ 4 checks were successful, ⏹️  6 checks were cancelled

Pull Request URL: #3042

Author: nishasy

.changeset/hungry-brooms-talk.md

@@ -0,0 +1,5 @@
+---
+"@khanacademy/perseus-editor": patch
+---
+
+[Interactive Graph] Handle autogen aria label for open locked points

packages/perseus-editor/src/widgets/interactive-graph-editor/locked-figures/locked-point-settings.test.tsx

@@ -491,4 +491,33 @@ describe("LockedPointSettings", () => {
                 "Point spoken A, spoken B at spoken $0$ comma spoken $0$. Appearance solid gray.",
         });
     });
+
+    test("aria label does not include fill when filled is false", async () => {
+        // Arrange
+        const onChangeProps = jest.fn();
+
+        // Act
+        render(
+            <LockedPointSettings
+                {...defaultProps}
+                ariaLabel={undefined}
+                onChangeProps={onChangeProps}
+                filled={false}
+            />,
+            {wrapper: RenderStateRoot},
+        );
+
+        const autoGenButton = screen.getByRole("button", {
+            name: "Auto-generate",
+        });
+        await userEvent.click(autoGenButton);
+
+        // Assert
+        // generateSpokenMathDetails is mocked to return the input string
+        // with "Spoken math details for " prepended.
+        expect(onChangeProps).toHaveBeenCalledWith({
+            ariaLabel:
+                "Point at spoken $0$ comma spoken $0$. Appearance solid gray border, with no fill.",
+        });
+    });
 });

packages/perseus-editor/src/widgets/interactive-graph-editor/locked-figures/locked-point-settings.tsx

@@ -116,8 +116,11 @@ const LockedPointSettings = (props: Props) => {
 
         let str = `Point${visiblelabel} at ${spokenX} comma ${spokenY}`;
 
-        const pointAppearance =
-            generateLockedFigureAppearanceDescription(pointColor);
+        const pointAppearance = generateLockedFigureAppearanceDescription(
+            pointColor,
+            "solid",
+            filled ? undefined : "none",
+        );
         str += pointAppearance;
 
         return str;