ARM: Fix the CallOtherJustTooFarAfter test.

Align the ARM and ARM64 tests that are using the helper
function Create2MethodsWithGap(), bringing the fix
    https://android-review.googlesource.com/722671
to the ARM architecture.

Test: m test-art-host-gtest
Test: Repeat with https://android-review.googlesource.com/890279
Bug: 123510633
Change-Id: I6ef17e66013f39311ea6ea522b6704c8891e52df