MudGlobal: Add more defaults for Button and Input

[sidneyxvr]

Description

Part of #4896

Added more mudglobal defaults

• Button - Variant
• Input - Variant and Margin

How Has This Been Tested?

no tests were added, just following the merged prs related to mudglobal

Type 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 not work as expected)
• Documentation (fix or improvement to the website or code docs)

Checklist

• The PR is submitted to the correct branch (dev).
• My code follows the code style of this project.
• I've added relevant tests.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.06%. Comparing base (28bc599) to head (8ebe413).
Report is 603 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev   #10006      +/-   ##
==========================================
+ Coverage   89.82%   91.06%   +1.23%     
==========================================
  Files         412      410       -2     
  Lines       11878    12517     +639     
  Branches     2364     2446      +82     
==========================================
+ Hits        10670    11398     +728     
+ Misses        681      570     -111     
- Partials      527      549      +22     

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[henon]

Thanks @sidneyxvr