Make internally stored default argument values public

[vyasr]

Description

There are a couple of default parameters that are being set, one to a local constexpr and another by a method, both of which were previously private. That made the defaults unintentionally opaque. This change makes both of them publicly visible values.

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

[vyasr]

/merge