fix: align shape builder controls with Sistent defaults (#147)

[ankitkr104]

Summary

This PR aligns Shape Builder control styling with the Sistent design system and default theme behavior, using minimal and targeted updates.

What Changed

1. Replaced the no-baseline Sistent wrapper with the full Sistent theme provider so components inherit the expected default theme styles.

2. Ensured theme mode changes are reflected reliably by initializing provider mode from the current app theme.

3. Removed hardcoded color overrides from the scale preset control so it follows Sistent theme tokens.

4. Applied consistent control sizing for the action row:

Height: 56px (3.5rem)
Font size: 1.35rem

5. Kept the scale preset control in an outlined style with a visible border

After:

Notes for Reviewers

• This PR fixes Use Sistent components #147

Signed commits

• Yes, I signed my commits.