Accommodate changes to canonicalized forms in ICU >= 70.1

Refer to:
https://github.com/unicode-org/icu/commit/01e1adc9e412c9c3177dc3e30d056c25d8687853

Update intl test suite for ICU 67.1

Cherry-picked from c915c601710e2a44e6c7f89fcb12b8047c968108.