feat: add AMT_HIDE_NAMETAGS to AvatarModifierType

[gonpombo8]

Summary

Adds a new AMT_HIDE_NAMETAGS value (= 2) to the AvatarModifierType enum so scenes can hide player name tags within an AvatarModifierArea region.

Targets protocol-squad so CI publishes a branch build of @dcl/protocol that the godot-explorer PR can consume. Mirror of #395 / #401 by @Gaffomdz, retargeted to protocol-squad to trigger the runners.

Companion PR: decentraland/godot-explorer#2079

What could break

• New enum value only — purely additive, no behavior change for existing scenes or SDK consumers.

How to test

• Wait for the CDN branch build to publish a @dcl/protocol .tgz
• Update PROTOCOL_FIXED_VERSION_URL in feat: add AMT_HIDE_NAMETAGS modifier to AvatarModifierArea godot-explorer#2079 to that .tgz
• Verify the godot client receives AMT_HIDE_NAMETAGS = 2 and hides nametags in the area

[github-actions]

Test this pull request

• The @dcl/protocol package can be tested in scenes by running

  npm install "https://sdk-team-cdn.decentraland.org/@dcl/protocol/branch//dcl-protocol-1.0.0-25880397403.commit-5215454.tgz"