fix(linter): ensure .cjs config file is handled correctly for generators #28214 (#28672)

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## Current Behavior
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When the workspace has `eslint.config.cjs` at the root, generation of
new lint projects currently does not check for it correctly


## Expected Behavior
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-->
Ensure utils continue to work as expected when `eslint.config.cjs` is
detected at the workspaceRoot

## Related Issue(s)
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merged. -->

Fixes #28214

Author: Coly010

packages/eslint/src/generators/lint-project/lint-project.ts

@@ -273,7 +273,8 @@ function createEsLintConfiguration(
     });
     const nodeList = createNodeList(importMap, nodes);
     const content = stringifyNodeList(nodeList);
-    tree.write(join(projectConfig.root, 'eslint.config.js'), content);
+    const ext = extendedRootConfig?.endsWith('.cjs') ? '.cjs' : '.js';
+    tree.write(join(projectConfig.root, `eslint.config${ext}`), content);
   } else {
     writeJson(tree, join(projectConfig.root, `.eslintrc.json`), {
       extends: extendedRootConfig ? [pathToRootConfig] : undefined,

packages/eslint/src/generators/utils/eslint-file.ts

@@ -64,7 +64,11 @@ export function isEslintConfigSupported(tree: Tree, projectRoot = ''): boolean {
   if (!eslintFile) {
     return false;
   }
-  return eslintFile.endsWith('.json') || eslintFile.endsWith('.config.js');
+  return (
+    eslintFile.endsWith('.json') ||
+    eslintFile.endsWith('.config.js') ||
+    eslintFile.endsWith('.config.cjs')
+  );
 }
 
 export function updateRelativePathsInConfig(