Add failing regression test for browser find focus (#1891)

* test: add browser find focus regression

* ci: run browser find focus regression on prs

* ci: merge pr ui regressions into one job

* fix: focus browser find after navigation

* test: rename ui regressions workflow guard

* Fix browser find focus after address bar navigation

* Fix test-e2e workflow manifest script

* Address PR review feedback

* Stabilize browser focus regression on CI

---------

Co-authored-by: Lawrence Chen <lawrencecchen@users.noreply.github.com>

.github/workflows/test-e2e.yml

@@ -217,9 +217,7 @@ jobs:
             clang -framework Foundation -framework CoreGraphics \
               -o "$HELPER_PATH" scripts/create-virtual-display.m
 
-            cat >"$MANIFEST_PATH" <<EOF
-            {"helperBinaryPath":"$HELPER_PATH"}
-            EOF
+            printf '%s\n' "{\"helperBinaryPath\":\"$HELPER_PATH\"}" > "$MANIFEST_PATH"
           fi
 
           # Start recording right before the test (after build/resolve).