[Chapel Merge] Limit sparse subdomain clause to a single argument

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Branch: refs/heads/master
Revision: 81371c9
Author: e-kayrakli
Log Message:

Merge pull request #17344 from e-kayrakli/sparse-subdomain-syntax-error

Limit sparse subdomain clause to a single argument

If you pass a list of actuals to sparse subdomain clause, an assertion is
triggered, although that is illegal Chapel code and should be reported as such.

It is an easy to make mistake:

var s: sparse subdomain({1..10}, {1..10}); // actually meaning {1..10, 1..10}

This PR limits parser to read a single actual in sparse subdomain. Arguably,
we can have a better error message there, but this is an easy and quick fix for
now.

Resolves compiler bug when use incorrect syntax for anonymous domains (e.g., {0..4},{1..2}) · Issue #17339 · chapel-lang/chapel · GitHub

[Reviewed by @bradcray]

Test