Fixes a precision bug was introduced in 784e6d74, which improved the
precision of lerpDouble when the extrema differed significantly in
magnitude.

_lerpInt doesn't have this issue since the extrema are passed as 64-bit
twos-complement values, therefore the difference will always be accurate
so long as it doesn't overflow. This reverts the _lerpInt implementation
to the original a + (b - a) * t, but adds a test to avoid a regression
if anyone is tempted to make it consistent with the others.

This reverts commit cde78c16.

* Revert "Roll Dart SDK from 9f907e198970 to 37ccceacad41 (3 revisions) (#22069)"

This reverts commit 4f4599b2.

* Revert "Roll Dart SDK from a3d902d8598e to 9f907e198970 (2 revisions) (#22058)"

This reverts commit e51c710e.

* support uri intent launcher in android

* fix comment

Initialize the AssetManager from the application context so that assets from dynamic feature modules can be loaded.