fix: consider the cli install directory when resolving plugins (#1838)

.changeset/tender-forks-argue.md

@@ -0,0 +1,7 @@
+---
+"@redocly/openapi-core": patch
+"@redocly/cli": patch
+---
+
+Fixed an issue where running the `preview` command failed because one of its dependencies could not be resolved.
+The issue occurred when Realm was not installed in the `node_modules` of the project.

packages/core/src/config/config-resolvers.ts

@@ -136,7 +136,14 @@ export async function resolvePlugins(
         const absolutePluginPath = existsSync(maybeAbsolutePluginPath)
           ? maybeAbsolutePluginPath
           : // For plugins imported from packages specifically
-            require.resolve(plugin, { paths: [configDir] });
+            require.resolve(plugin, {
+              paths: [
+                // Plugins imported from the node_modules in the project directory
+                configDir,
+                // Plugins imported from the node_modules in the package install directory (for example, npx cache directory)
+                __dirname,
+              ],
+            });
 
         if (!pluginsCache.has(absolutePluginPath)) {
           let requiredPlugin: ImportedPlugin | undefined;