fix: add missing reference to raise hand sound

[davidejensen]

Pull Request Description

What does this PR change?

Fix #6275
Adds missing reference to raise hand sound

Test Instructions

Prerequisites

• own or be mod of a community to start a voice stream

Test Steps

1. Enter the voice stream
2. Raise hand
3. Verify it plays a sound when someone raises a hand

Additional Testing Notes

• Note any edge cases to verify
• Mention specific areas that need careful testing
• List known limitations or potential issues

Quality Checklist

• Changes have been tested locally
• Documentation has been updated (if required)
• Performance impact has been considered
• For SDK features: Test scene is included

Code Review Reference

Please review our Code Review Standards before submitting.

[github-actions]

Windows and Mac build successful in Unity Cloud! You can find a link to the downloadable artifact below.

Name	Link
Commit	46c5c29
Logs	https://github.com/decentraland/unity-explorer/actions/runs/22481570103
Download Windows	https://github.com/decentraland/unity-explorer/suites/58781624588/artifacts/5689202487
Download Windows S3	https://explorer-artifacts.decentraland.org/@dcl/unity-explorer/branch/fix/raise-hand-audio/pr-19193-46c5c29/Decentraland_windows64.zip
Download Mac	https://github.com/decentraland/unity-explorer/suites/58781624588/artifacts/5689267478
Download Mac S3	https://explorer-artifacts.decentraland.org/@dcl/unity-explorer/branch/fix/raise-hand-audio/pr-19193-46c5c29/Decentraland_macos.zip
Built on	2026-02-27T11:39:07Z

Artifact size check

Target	Size (MB / MiB)	Cap (MB)	Δ MB vs release	Δ % vs release	Result
windows64	316.0 / 301.4	320	-2	-0.63%	✅ OK
macos	406.4 / 387.6	410	0	-0.15%	✅ OK

Comparing against: v0.129.0-alpha

[DafGreco]

✔️ PR reviewed and approved by QA on both platforms following instructions playing both happy and un-happy path

Regressions for this ticket had been performed in order to verify that the normal flow is working as expected:

• [✔️ ] Backpack and wearables in world
• [ ✔️ ] Emotes in world and in backpack
• [✔️ ] Teleport with map/coordinates/Jump In
• [✔️ ] Chat and multiplayer
• [✔️ ] Profile card
• [✔️ ] Skybox
• [✔️ ] Settings

Evidence:

20260227-1533-18.1876260.mp4