fix(settings): align guided tour highlights with dialog rows

[jonathanwxh-cell]

Fixes #2364.

The Settings tour can highlight the app bar instead of the setting it describes. On the original code, the Language target was at y=229 while its spotlight started at y=4. Joyride measures offsets differently for targets inside a fixed, scrolling dialog; the inner target div was positioned relative to its row/list rather than the dialog.

Move each target ID onto the complete setting row and keep the Settings lists out of the offset-parent chain. Preserve the dialog scroll container and replace the 500px scroll offset with 20px. Start the tour after the dialog's entrance transition finishes so a fresh visit cannot calculate scrolling from a moving target.

Add browser regression coverage for all seven setting targets in English, Spanish, and Arabic/RTL, in light and dark themes. The checks compare spotlight/row geometry, require the whole target and tooltip to be visible, check the tour images, and verify completion/dismissal persistence and help-button restart. PLAYWRIGHT_BASE_URL allows testing the local branch instead of the default QA deployment.

Validation on Node 22.23.2:

• The geometry regression failed on the original code with a 221px error.
• All 12 Chromium desktop/mobile-emulation cases pass on the fix, with no Joyride warnings/errors detected.
• Production build and service-worker generation pass.
• CircleCI on commit 609e41a: all 62 selected suites, 434 tests, and 65 snapshots pass; its full formatting check passes too. Codacy and Snyk checks pass.
• Final local affected unit tests: 12 suites, 23 tests, and 17 snapshots pass (Settings and FullScreenDialog). One broader local rerun stalled and was stopped; CircleCI subsequently completed the full selected suite successfully on the submitted commit.
• Changed files pass Prettier and git diff --check; the commit hook also passed.

For a local browser run, start the app on port 3100, then run:

PLAYWRIGHT_BASE_URL=http://127.0.0.1:3100 npx playwright test tests/unlogged/settings/tour.spec.js --project=chromium --project=mobile --workers=1

Other-tour checks: stepped through the root-board, unlocked-board, communicator-builder, and symbol-search tours. The Communicator spotlight problem also reproduces on the public production app and is reported separately in #2368. I found no Joyride tour in the current Analytics implementation.

Limits: Firefox was attempted but its downloaded executable cannot start on this Windows machine (side-by-side configuration error). Packaged Android/Cordova and physical mobile devices were not tested. Web tour images loaded in all tested language/theme combinations.

Asked about existing ownership and the preferred approach in #2364 before preparing the patch. Ready for maintainer review; additional Firefox and packaged Android verification would be welcome.