Support split-mode on Note Shortcut

Cherry picked I90adb9eaf7cb33968db38daa8322ecd8a0a62939 to master due to b/286408867.

Code was merged via `-s ours` and is missing even though the sha exists on the target branch. Cherry pick is required to bring in the code.

Manually remove the "Merged in" directive to allow for downstream propagation.

Test: atest NoteTaskInfoTest
Flag: not needed
Fixes: b/284296041
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:cb876c5e29567718cd41cc24d63f58928adcdc0f)
Change-Id: I588fbf8122300b4826db9913d742a9ca5ea7b5e8