jQuery 4 removed $.isFunction and $.holdReady, which threw at runtime
("$.isFunction is not a function" on the Clear Cache / delete path).
- Replace the three $.isFunction(callback) checks with typeof === 'function'.
- Drop the two $.holdReady calls in forceLogin; the redirect already keeps
an unauthenticated user off the page.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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