[NhanAZ]

Summary

Prepare the v4.0.4 patch release for the BedrockNexus self-build fix.

• Synchronize plugin, Composer lock metadata, changelog, release notes and version validation.
• Document the narrow compatibility fix without changing public commands, manifests or runtime APIs.

Verification

• composer check passed: 543 tests, 12,926 assertions, 20 skipped; docs, ecosystem inventory, static analysis and PHAR validation passed.

ode --test .github/scripts/*.test.mjs passed: 12 tests.

• composer audit found no security advisories; it reported 10 abandoned PocketMine transitive packages.
• Commit is GPG-signed.

This PR only prepares the release source. The release candidate and runtime evidence will be checked before publication.