Update to package:intl4x (#977)

* Update to branch

* new bindings

* remove duplicate build_libs

* format

* try fixing collation

* Collation support

* Fix others

* toX to getters

* Kind of works

* Fixes

* Seems to start working

* refactorings

* add asserts

* More test cases

* fix tests

* More fixes

* More fixes

* start changing api

* Stwiched API

* Remove timezones

* Add timezones back

* Manually treeshake timezones

* Add recorduse to bindings

* Refactor

* Also treeshake datetime format

* Add changelog

* Run dart build during tests

* Fixes

* More fixes

* try this

* Fix line length

* Use main branch

* try allowing non utc

* remove utc

* Try something new

* Should pass

* Show output

* stdout

* pub get first

* Fix wf

* Add linux toolchain

* set up toolchains

* fix

* Add locale print for debug

* more debug

* Remove panic_handler

* use looping

* Remove custom locale code

* New name

* Fixes

* artifacts fix

* Generate more artifacts

* Add file size check

* try stuff

* Fix local build

* fix path

* Fix args to datagen

* Fix upload name

* Fix typo

* Fix exports

* Don't run on skip-fetch

* check smarter for labels

* fix typo

* Fix

* Check if this fixed windows

* Exclude windows again

* Update to main

* Enable windows

* Exclude windows for now

* Add todo

* Changes as per review

* Changes as per review

* Fix tests