MailCatcher UI not working in 0.10.0 (when installed via homebrew)

Environment:

OS: macOS Sonoma 14.4.1 Ruby: 3.3.2 MailCatcher: 0.10.0 Browser: Google Chrome (125.0.6422.114) and Mozilla Firefox (126.0.1)

The .js and .css files from /assets are resolving with an incorrect content-type of text/html, which prevents browsers from executing them.

This issue was not present in the 0.9.0 version of MailCatcher.