[vm/compiler] Explicitly use near jumps in InstantiateTypeArgumentsInstr
[vm/compiler] Explicitly use near jumps in InstantiateTypeArgumentsInstr

This addresses a small performance regression introduced in a
refactoring (see [0]).

[0] https://dart-review.googlesource.com/c/sdk/+/192185

TEST=Existing test suite.

Change-Id: Ib4a7374d7172ce8a87ac608b2a0afa38cfd89a4e
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/192741
Reviewed-by: Aske Simon Christensen <589eb3fd9a84f06d0ac46d3aa71dddcfb0814ccd@google.com>
Commit-Queue: Martin Kustermann <a35dd5b79fac84b2bb3b026a16b8becc55af5961@google.com>

dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk