fix: adapt setContent call sites for puppeteer-core 24.43.1

puppeteer-core 24.43.1 (puppeteer/puppeteer#14940) narrowed
Page.setContent's options to SetContentWaitForOptions, excluding
networkidle0/networkidle2 from waitUntil. The union-bound `gotoCall`
pattern across the four shared HTTP routes broke type-checking because
GoToOptions could no longer satisfy the intersected parameter type.

Introduce toSetContentOptions() in utils to strip the unsupported
waitUntil values, and branch each call site explicitly between
page.goto and page.setContent.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>