feat: Retry failed messages within 24h (#12436)

Fixes [CW-5540](https://linear.app/chatwoot/issue/CW-5540/feat-allow-retry-a-failed-message-sendout),
https://github.com/chatwoot/chatwoot/issues/12333

## Type of change

- [x] New feature (non-breaking change which adds functionality)

## How Has This Been Tested?

### Screenshot
<img width="196" height="113" alt="image"
src="https://github.com/user-attachments/assets/8b4a1aa9-c75c-4169-b4a2-e89148647e91"
/>



## Checklist:

- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my code
- [x] I have commented on my code, particularly in hard-to-understand
areas
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [x] I have added tests that prove my fix is effective or that my
feature works
- [x] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream
modules

---------

Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>

app/javascript/shared/helpers/timeHelper.js

@@ -3,6 +3,7 @@ import {
   isSameYear,
   fromUnixTime,
   formatDistanceToNow,
+  differenceInDays,
 } from 'date-fns';
 
 /**
@@ -91,3 +92,25 @@ export const shortTimestamp = (time, withAgo = false) => {
     .replace(' years ago', `y${suffix}`);
   return convertToShortTime;
 };
+
+/**
+ * Calculates the difference in days between now and a given timestamp.
+ * @param {Date} now - Current date/time.
+ * @param {number} timestampInSeconds - Unix timestamp in seconds.
+ * @returns {number} Number of days difference.
+ */
+export const getDayDifferenceFromNow = (now, timestampInSeconds) => {
+  const date = new Date(timestampInSeconds * 1000);
+  return differenceInDays(now, date);
+};
+
+/**
+ * Checks if more than 24 hours have passed since a given timestamp.
+ * Useful for determining if retry/refresh actions should be disabled.
+ * @param {number} timestamp - Unix timestamp.
+ * @returns {boolean} True if more than 24 hours have passed.
+ */
+export const hasOneDayPassed = timestamp => {
+  if (!timestamp) return true; // Defensive check
+  return getDayDifferenceFromNow(new Date(), timestamp) >= 1;
+};