fix: add scroll strategy options to public api

[yggg]

Please read and mark the following check list before creating a pull request:

• I read and followed the CONTRIBUTING.md guide.
• I read and followed the New Feature Checklist guide.

Short description of what this resolves:

[codecov]

Codecov Report

Merging #2129 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master    #2129   +/-   ##
=======================================
  Coverage   84.71%   84.71%           
=======================================
  Files         234      234           
  Lines        8030     8030           
  Branches      707      707           
=======================================
  Hits         6803     6803           
  Misses       1010     1010           
  Partials      217      217

Impacted Files	Coverage Δ
src/framework/theme/public_api.ts	100% <100%> (ø)	⬆️