Fix an issue with Ember Data v4.12

Adding the compatAdapters is a temporary workaround until the issue is resolved upstream somehow.

More information: embroider-build/embroider#1506

ember-cli-build.js

@@ -1,6 +1,7 @@
 'use strict';
 
 const EmberApp = require('ember-cli/lib/broccoli/ember-app');
+const { V1Addon } = require('@embroider/compat');
 
 module.exports = function (defaults) {
   let app = new EmberApp(defaults, {
@@ -18,5 +19,47 @@ module.exports = function (defaults) {
     staticModifiers: true,
     staticComponents: true,
     splitAtRoutes: ['map'],
+
+    // These compatAdapters are needed to work around an Ember Data v4.12 + Embroider issue
+    // We can remove them once the issue is fixed or when we update to v5.4 since supposedly it's not an issue there
+    // https://github.com/embroider-build/embroider/issues/1506
+    compatAdapters: new Map([
+      [
+        // Copy of the Embroider version without the version check: https://github.com/embroider-build/embroider/blob/main/packages/compat/src/compat-adapters/%40ember-data/debug.ts
+        '@ember-data/debug',
+        class EmberDataDebugCompatAdapter extends V1Addon {
+          get packageMeta() {
+            let meta = super.packageMeta;
+
+            // See also the compat-adapter for @ember-data/store where we make this an
+            // implicit-module.
+            meta.externals = [...(meta.externals ?? []), '@ember-data/store'];
+
+            return meta;
+          }
+        },
+      ],
+      [
+        // Copy of the Embroider version without the version check: https://github.com/embroider-build/embroider/blob/main/packages/compat/src/compat-adapters/%40ember-data/store.ts
+        '@ember-data/store',
+        class EmberDataStoreCompatAdapter extends V1Addon {
+          get packageMeta() {
+            let meta = super.packageMeta;
+
+            // this is here because the compat-adapter for @ember-data/debug adds this
+            // to externals because it has an undeclared peerDep on us, and thus might
+            // resolve totally incorrect copies. By making it external we leave it up to
+            // runtime, where we will find this implicit-module for the actual copy of
+            // @ember-data/store that is active in app.
+            meta['implicit-modules'] = [
+              ...(meta['implicit-modules'] ?? []),
+              './index.js',
+            ];
+
+            return meta;
+          }
+        },
+      ],
+    ]),
   });
 };