Fixed the test HttpsUpgradeBrowserTest.CheckUpgrades. Fixed interstitial warning when https only is allowed site. STR: 1. Open https://badssl.com/ 2. Change Brave Shields settings to `Only connect with HTTPS` 3. Click http button, leads to http://http.badssl.com/ 4. Change Brave Shields settings to `Only connect with HTTPS` 5. Go back 6. Click again http button, leads to http://http.badssl.com/ 7. Expected to see interstitial page with warning, works so on cr143 7. Actual: just blank page. Chromium change https://source.chromium.org/chromium/chromium/src/+/2acf63007e896db6771b218c58a10b592089518f [HFM] Enable the new Ask-before-HTTP dialog UI by default This makes the new dialog UI the default for users who have HTTPS-First Mode enabled on Desktop, replacing the old full page interstitial UI. (The Android implementation will use a separate feature flag.) Bug: 351990829 Change-Id: Ib13538bbfc79752ac64c8b956f0bbc28cd872c77 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7173972