Identify unbounded ids in binary expressions

[mmisol]

Purpose

Unbounded identifiers were not recognized in some binary expressions.
This was a parser issue, which was failing to set the line and column
properly for some expressions. The problem was detected when negative
floats or characters (not strings) were used in the right hand side.

The issue was also fixed for declarative blocks for completeness but
it should not affect variable creation for unbounded identifiers.

Declarations

Check these if you believe they are true

• The codebase is in a better state after this PR
• Is documented according to the standards
• The level of testing this PR includes is appropriate
• User facing strings, if any, are extracted into *.resx files
• All tests pass using the self-service CI.
• Snapshot of UI changes, if any.
• Changes to the API follow Semantic Versioning and are documented in the API Changes document.
• This PR modifies some build requirements and the readme is updated

Reviewers

@aparajit-pratap @QilongTang

FYIs

@DynamoDS/dynamo