[adarshsm]

Fixes #1286.

GeoJsonPopup binds its popup to the GeoJSON group. The Search callback only checks the matched feature's _popup, so it never opens a group-bound popup.

When the feature has no popup of its own, temporarily bind the group's popup to that feature, open it, and remove the temporary binding. This gives the popup content callback the matched feature without leaving duplicate click handlers behind. Existing feature-bound popups keep their current path.

Added a generated-JavaScript regression test, confirmed failing before the fix and passing afterward.

Verification

• pytest tests/plugins/test_search.py -q: 1 passed.
• Local runtime check with real Leaflet 1.9.3, Leaflet Search 2.9.7, and jsdom: the unmodified callback leaves the popup closed; the fixed callback opens it with the second feature's content. Normal feature clicks still work and no extra feature popup binding remains. This was a local check, not a Selenium/browser-suite run.
• pytest tests --ignore=tests/snapshots --ignore=tests/selenium --ignore=tests/playwright -q: 396 passed, 4 failed. The same four tests fail on unmodified upstream: missing geodatasets and three PNG-rendering tests requiring Selenium. No new suite failures.
• Scoped ruff check and git diff --check: passed.

🤖 Generated with Claude Code