fix(core): handle line endings in ignore file parsing (#23895)

Co-authored-by: cynthialong0-0 <82900738+cynthialong0-0@users.noreply.github.com>

packages/core/src/utils/gitIgnoreParser.ts

@@ -52,7 +52,7 @@ export class GitIgnoreParser implements GitIgnoreFilter {
           .split(path.sep)
           .join(path.posix.sep);
 
-    const rawPatterns = content.split('\n');
+    const rawPatterns = content.split(/\r\n|\n|\r/);
     return ignore().add(this.processPatterns(rawPatterns, relativeBaseDir));
   }
 

packages/core/src/utils/ignoreFileParser.ts

@@ -70,7 +70,7 @@ export class IgnoreFileParser implements IgnoreFileFilter {
     debugLogger.debug(`Loading ignore patterns from: ${patternsFilePath}`);
 
     return (content ?? '')
-      .split('\n')
+      .split(/\r\n|\n|\r/)
       .map((p) => p.trim())
       .filter((p) => p !== '' && !p.startsWith('#'));
   }