Resolve rectangular ___domain module code in Dyno

[riftEmber]

Implement resolution of basic rectangular ___domain type expressions and literals using ChapelDomain module code, replacing the stub compiler implementation.

Includes:

• Allow new resolution for DomainTypes
• Rewrite new dmap as new _distribution
• Try to resolve ___domain type expressions as type of new _domain
• Try to resolve ___domain literals with chpl__buildDomainExpr/chpl__ensureDomainExpr
• Get new _domain resolving
• Get testing working against real _domain type from modules for rectangular domains

Contributes to https://github.com/Cray/chapel-private/issues/6163.

Future work:

• use associative domains module code as well
• set up dmapped keyword to resolve a call to chpl_distributed

[reviewer info placeholder]

Depends on these PRs which should be merged first: #25780, #25816, #25931, #25932, #25944, #25954. (Note to self for rebasing: first commit for this branch is Move 'init' call comment closer to where it's created.)

Testing:

• dyno tests
• paratest