CCM-10893 Trim trailing whitespace from truncate

Author: nicki-nhs

frontend/src/__tests__/utils/truncate.test.ts

@@ -11,3 +11,7 @@ test('returns full string if under max length', () => {
 test('truncates and adds ellipsis if over max length', () => {
   expect(truncate('This is a long string', 10)).toBe('This is a…');
 });
+
+it('trims trailing whitespace before ellipsis', () => {
+  expect(truncate('Hello world', 6)).toBe('Hello…');
+});

frontend/src/utils/truncate.ts

@@ -1,3 +1,5 @@
 export const truncate = (text: string, maxLength = 50): string => {
-  return text.length > maxLength ? text.slice(0, maxLength - 1) + '…' : text;
+  return text.length > maxLength
+    ? text.slice(0, maxLength - 1).trimEnd() + '…'
+    : text;
 };