Fix an ALA bug due to a missing dsiEqualDMaps overload

[e-kayrakli]

This PR fixes an issue exposed by llm.chpl where rank-change array views and ALA did not work well in some scenarios. These issues would cause:

$CHPL_HOME/modules/internal/ChapelAutoLocalAccess.chpl:57: In function 'chpl__ala_dynamicCheck':
$CHPL_HOME/modules/internal/ChapelAutoLocalAccess.chpl:63: error: unresolved call 'unmanaged ArrayViewRankChangeDist(unmanaged DefaultDist,3*bool,3*int(64)).dsiEqualDMaps(unmanaged DefaultDist)'

This was because a missing dsiEqualDMaps overload in the rank-change array views. The PR adds that overload, and tests that reproduced the issue.

I also confirmed that the same issue doesn't exist in slice arrayviews. I am adding a symmetric test to lock in that behavior.

Test:

• linux64
• gasnet