Fix data map removals being required to exist

[Matyrobbrt]

This PR fixes the oversight that makes data map removals required, erroring if they are not resolvable (such as being for an inexistent value). Removals should be optional.

[neoforged-pr-publishing]

• Publish PR to GitHub Packages

Last commit published: d3c7a45ecec80691db47a8d6d95790c2dbb881c5.

PR Publishing

The artifacts published by this PR:

• 📦 net.neoforged:neoforge:21.4.76-beta-pr-1886-fix-dmap-removals-being-required
• 📦 net.neoforged:testframework:21.4.76-beta-pr-1886-fix-dmap-removals-being-required

Repository Declaration

In order to use the artifacts published by the PR, add the following repository to your buildscript:

repositories {
    maven {
        name 'Maven for PR #1886' // https://github.com/neoforged/NeoForge/pull/1886
        url 'https://prmaven.neoforged.net/NeoForge/pr1886'
        content {
            includeModule('net.neoforged', 'neoforge')
            includeModule('net.neoforged', 'testframework')
        }
    }
}

MDK installation

In order to setup a MDK using the latest PR version, run the following commands in a terminal.
The script works on both *nix and Windows as long as you have the JDK bin folder on the path.
The script will clone the MDK in a folder named NeoForge-pr1886.
On Powershell you will need to remove the -L flag from the curl invocation.

mkdir NeoForge-pr1886
cd NeoForge-pr1886
curl -L https://prmaven.neoforged.net/NeoForge/pr1886/net/neoforged/neoforge/21.4.76-beta-pr-1886-fix-dmap-removals-being-required/mdk-pr1886.zip -o mdk.zip
jar xf mdk.zip
rm mdk.zip || del mdk.zip

To test a production environment, you can download the installer from here.

[neoforged-releases]

🚀 This PR has been released as NeoForge version 21.4.74-beta.