UXD - Blank Map Success Indicator

### Overview
We need to alert the user that the search they've requested is completed so they don't get frustrated and abandon because they think the map is still rendering data.

### Action Items

- [x] Investigate an appropriate way to alert the user that their search is completed
- [x] organization stakeholder has recommended using a [snackbar](https://m3.material.io/components/snackbar/overview)
- [x] Document user interaction in Figma
- [x] Update the Hand Off section of this ticket with the final iteration of this design

---

### Design Iterations

**Please move ticket between `In Progress` and `In Review` to assist PM team**

Iteration 1

[Link to Notes](https://github.com/hackforla/311-data/issues/2011#issuecomment-3567091316)

---

### Hand Off Materials

Figma Section Name: `⭐⭐⭐ Handoff`

Before Screenshot

After Screenshot (Finalized)

### Designer Resources

Iteration Dropdown Copy/Paste

```

Iteration X

Link to notes: `REPLACE WITH COMMENT URL`

`REPLACE WITH SCREENSHOT UPLOAD`

```

Instructions for Engineering Hand Off

To Start Engineering Hand Off...
1. Ensure all Hand Off Materials are filled in
3. Add the "ready for dev lead" label
4. Leave a comment saying "This ticket is ready for engineering hand off."