style: ensure newlines at the end of each file

src/features/settings/utils/__tests__/getSetting.test.js

@@ -523,4 +523,4 @@ test.for([
     ({ settings: veryNestedSettingsList, path: ['1b', '2b', '3b', '4ba', '5b', '6b', '7a'], expected: undefined })
 ])('returns $expected', ({ settings, path, expected }) => {
     expect(getSettingRecursively(path, settings)).toStrictEqual(expected);
-});
+});

src/features/settings/utils/__tests__/settingsPage.test.js

@@ -60,4 +60,4 @@ describe('settingsPage', () => {
             expect(getSettingsPagePathSegments(path)).toStrictEqual(expected);
         });
     })
-})
+})

src/features/settings/utils/__tests__/settingsValidator.test.js

@@ -810,4 +810,4 @@ describe('settingsValidator', () => {
             expect(() => assertString(value)).throws(Error);
         });
     });
-});
+});