Remove unwarranted size deprecation console warnings

[ggdouglas]

Proposed changes:

Issue raised in #7232 (comment), related to #7232

Fixes deprecation warnings for newly deprecated small and large props firing where they shouldn't for components that provide defaultProps to these props (like NumericInput).

Setting these to explicitly check for true values makes the warning less effective against warning against mixed use, e.g.

<InputGroup small={true} large={false} />

but it also makes it more resilient against triggering false-positives, which seems more important.

[svc-palantir-github]

Only trigger deprecated size warning for explicitly true values

Build artifact links for this commit: documentation | landing | table | demo

This is an automated comment from the deploy-preview CircleCI job.