Ubuntu 20.04 Focal doesn't have webkit2 4.1. The API is the same as
with 4.0, so we use that if we can't find 4.1.

auto: increment master version to 17.0.251

feat(developer): marker normalization in .ts 🙀 

fix(android/engine): Skip final globe key action

For: #10317

fix(web): osk responsiveness to held modifiers on legacy kbds 🧓

fix(android/engine): Add RECEIVER_EXPORTED flag for broadcast receiver

auto: increment master version to 17.0.250

chore(web): worker sourcemap cleanup, mobile app webview sourcemap compat

feat(web): suggestion banner UI enhancements - suggestion expanding + scrollable banner

- use Intl.Segmenter instead.

For: #10317

- cleanup and move marker_no_index into the shared area

For: #10317

- normalize_nfd is working

For: #10317

- add_back_markers

For: #10317

- add nfd table from ICU

For: #10317

- add remove_markers

For: #10317

- C++ build fix

For: #10317

auto: increment master version to 17.0.249

feat(core): cross-segment markers 🙀 

fix(web): bulk renderer interface for recent-version targeting keyboards

chore(android/app): Update whatsnew for 17.0

For: #10369

Co-authored-by: Marc Durdin <marc@durdin.net>

fix(web): U_ key id -> text for all subkeys; is now preprocessed

fix(ios): multiple keyboard slide-in animations on app start

fix(web): keyboard-documentation rendering mode