When a leaf node exists at the same Trie location as an internal node, it should be a child of that internal node using SENTINEL_CODE_UNIT
(\ufdd0).  The fixture was using null/undefined instead!

Aims for a UCS-2 encoded string and does not shy away from unpaired surrogates in the encoding.

auto: increment master version to 18.0.12

chore(deps-dev): bump follow-redirects from 1.15.4 to 1.15.6

auto: increment master version to 18.0.11

Bumps [follow-redirects](https://github.com/follow-redirects/follow-redirects) from 1.15.4 to 1.15.6.
- [Release notes](https://github.com/follow-redirects/follow-redirects/releases)
- [Commits](https://github.com/follow-redirects/follow-redirects/compare/v1.15.4...v1.15.6

)

---
updated-dependencies:
- dependency-name: follow-redirects
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

chore: Merge beta to master for Sprint B17S3

auto: increment beta version to 17.0.289

fix(developer): min Keyman version for LDML is 17.0

docs(android/app): Add data privacy policy page

Merge pull request #10983 from keymanapp/fix/developer/font-family-returns-null-if-ttfMeta-promise-errors

fix(developer): getFontFamily now returns null if ttfMeta.promise errors

chore(developer): Merge branch 'beta' into fix/developer/font-family-returns-null-if-ttfMeta-promise-errors

test(developer): kmc keyboard info compiler messages unit tests

auto: increment beta version to 17.0.288