fix: Overlapping graphics with two icons in form elements

[Satloff]

🤔 This is a ...

• New feature
• Bug fix
• Site / document update
• Component style update
• TypeScript definition update
• Refactoring
• Code style optimization
• Test Case
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🔗 Related issue link

#4431

💡 Background and solution

This addresses the issue raised in #4431. Now that we can change the @form-component-height we need to calculate the proper spacing between the two icons. This maintains the correct spacing even as the component height grows.

📝 Changelog

Language	Changelog
🇺🇸 English	Fixes #4431. Adds correct spacing between two icons in form elements.
🇨🇳 Chinese

☑️ Self Check before Merge

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
• TypeScript definition is updated/provided or not needed
• Changelog is provided or not needed

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[codecov]

Codecov Report

Merging #20164 into master will not change coverage.
The diff coverage is n/a.

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##           master   #20164   +/-   ##
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  Coverage   97.81%   97.81%           
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  Files         286      286           
  Lines        7739     7739           
  Branches     2177     2177           
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  Hits         7570     7570           
  Misses        169      169

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