Fix Pro console logging test for new format

The test was unconditionally removing the first line assuming there
would be a leading blank line from the old wrapInScriptTags format.

With the new approach where Ruby wraps the console script using
content_tag (via wrap_console_script_with_nonce), there's no leading
blank line, so the test was incorrectly skipping the first log line.

Changed to only shift if the first line is actually empty.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: justin808

react_on_rails_pro/spec/dummy/spec/requests/renderer_console_logging_spec.rb

@@ -28,8 +28,8 @@
       script_node = html_nodes.css("script#consoleReplayLog")
       script_lines = script_node.text.split("\n")
 
-      # First item is a blank line since expected script starts form "\n":
-      script_lines.shift
+      # Remove leading blank line if present (old format had it, new format doesn't)
+      script_lines.shift if script_lines.first && script_lines.first.empty?
 
       # Create external iterators for expected and found console replay script lines:
       expected_lines_iterator = expected_lines.to_enum