[QA] Interact toggle: no hover-hint for "Press E" interactions in editor

### 🛠️ **Build version:**
Decentraland Creator Hub 0.45.0 (fix/bevy branch) — PR #1463, item "Interact toggle" (#1458)

### 📔 **Issue Description:**
~~Originally filed as: clicking a smart item with Interact toggled on produced no interaction.~~ **Update:** confirmed with Nico [here](https://decentralandteam.slack.com/archives/C05T5G3E9SN/p1786117353119819?thread_ts=1786102399.266079&cid=C05T5G3E9SN) that this works as expected — the smart item tested (chest) is triggered by pressing **E** while pointing at it, not by clicking. Testing with E instead of click confirms the interaction fires correctly with Interact toggled on.

The remaining gap: there's no hover-hint in the editor telling you to press E while pointing at an interactable item, unlike the real Explorer client. This makes it easy to miss which items are interactable and how to trigger them while testing in the editor.

### 👣 **STR:**
1. Open a scene containing a smart item that uses a "Press E" interaction (e.g. a chest)
2. Hit Play to run the scene in the Bevy editor
3. Toggle "Interact" on
4. Point at the interactable item — no hint or prompt appears indicating it can be interacted with, or which key to press
5. Press E while pointing at it — interaction fires correctly (confirmed working)

### ✔️ **Expected Result:**
While Interact is toggled on and the cursor/pointer is over an interactable item, the editor should show a hint (e.g. "Press E") similar to the in-world Explorer hover prompt, so testers/builders know the item is interactable and how to trigger it.

### ❌ **Actual Result with evidence:**
No hover-hint appears at any point. The interaction itself works correctly once E is pressed — this is a discoverability/UX gap, not a functional bug.
[Repro video from original report attached above — shows clicking (no effect, expected) but does not show the working E-press interaction]

### ➗ **Reproduction:**
🔁 Always (absence of hint)

#### 🖥️ **Operative system and additional Notes:**
macOS M3 + Windows 11 (Dafne). Found while validating PR #1463 / #1458. Originally reported as a functional bug; reclassified as a UX enhancement after confirming with @nicoecheza that E-press interactions work as intended. Suggested by Nico as a nice addition to include when Interact is toggled on.

https://github.com/user-attachments/assets/08aa914d-8b31-40dd-b31c-1d2568f6a56e