SWED-2268 vscroll via dataset not class + glow

[goldenraphti]

Description

• add scroll-blocking via data-attribute, so it does not interfere with component scripts such as topbar blocking body vscroll
• add glow-effect to the expand/reduce button, to make it "POP" 🎆

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have updated the CHANGELOG document.
• I have added tests to cover my changes.
• All new and existing tests passed.

Review instructions

Review instructions

[codecov]

Codecov Report

Merging #904 (3a1782f) into develop (25dce2f) will decrease coverage by 0.02%.
Report is 1 commits behind head on develop.
The diff coverage is 0.00%.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #904      +/-   ##
===========================================
- Coverage    72.67%   72.65%   -0.02%     
===========================================
  Files          211      211              
  Lines         4497     4498       +1     
  Branches      1258     1257       -1     
===========================================
  Hits          3268     3268              
- Misses        1092     1093       +1     
  Partials       137      137              

Files Changed	Coverage Δ
src/App/docutils/ComponentPreview/index.js	36.60% <0.00%> (-0.17%)	⬇️

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update f53154c...3a1782f. Read the comment docs.

[github-actions]

Size Change: +1.07 kB (0%)

Total Size: 1.1 MB

Filename	Size	Change
dist/designguide/styles/documentation-payex.css	8.57 kB	+263 B (+3%)
dist/designguide/styles/documentation-swedbankpay.css	7.67 kB	+261 B (+4%)
dist/styles/documentation-payex.css	8.57 kB	+263 B (+3%)
dist/styles/documentation-swedbankpay.css	7.67 kB	+261 B (+4%)

ℹ️ View Unchanged

Filename	Size	Change
dist/designguide/scripts/dg-dashboard.js	72.9 kB	0 B
dist/designguide/scripts/dg.js	24.5 kB	0 B
dist/designguide/styles/payex.css	41.1 kB	0 B
dist/designguide/styles/swedbankpay.css	39.1 kB	0 B
dist/scripts/9438.js	71.8 kB	0 B
dist/scripts/dg-dashboard.js	72.9 kB	0 B
dist/scripts/dg.js	24.5 kB	0 B
dist/scripts/payex.js	322 kB	+11 B (0%)
dist/scripts/swedbankpay.js	322 kB	+11 B (0%)
dist/styles/payex.css	41.1 kB	0 B
dist/styles/swedbankpay.css	39.1 kB	0 B

_{compressed-size-action}