Fix dollar sign replacement bug in file editing (#7871)

Co-authored-by: Jacob Richman <jacob314@gmail.com>

packages/core/src/utils/textUtils.ts

@@ -4,6 +4,27 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+/**
+ * Safely replaces text with literal strings, avoiding ECMAScript GetSubstitution issues.
+ * Escapes $ characters to prevent template interpretation.
+ */
+export function safeLiteralReplace(
+  str: string,
+  oldString: string,
+  newString: string,
+): string {
+  if (oldString === '' || !str.includes(oldString)) {
+    return str;
+  }
+
+  if (!newString.includes('$')) {
+    return str.replaceAll(oldString, newString);
+  }
+
+  const escapedNewString = newString.replaceAll('$', '$$$$');
+  return str.replaceAll(oldString, escapedNewString);
+}
+
 /**
  * Checks if a Buffer is likely binary by testing for the presence of a NULL byte.
  * The presence of a NULL byte is a strong indicator that the data is not plain text.