fix: allow next lint without eslint-config-next installed (#29823)

Author: stefanprobst

packages/next/lib/eslint/runLintCheck.ts

@@ -200,12 +200,13 @@ async function lint(
         eslintVersion: eslintVersion,
         lintedFilesCount: results.length,
         lintFix: !!options.fix,
-        nextEslintPluginVersion: nextEslintPluginIsEnabled
-          ? require(path.join(
-              path.dirname(deps.resolved.get('eslint-config-next')!),
-              'package.json'
-            )).version
-          : null,
+        nextEslintPluginVersion:
+          nextEslintPluginIsEnabled && deps.resolved.has('eslint-config-next')
+            ? require(path.join(
+                path.dirname(deps.resolved.get('eslint-config-next')!),
+                'package.json'
+              )).version
+            : null,
         nextEslintPluginErrorsCount: formattedResult.totalNextPluginErrorCount,
         nextEslintPluginWarningsCount:
           formattedResult.totalNextPluginWarningCount,