The application (Tree view) does not display the appropriate alignment and size for the "Expand" and "Contract" folder icons

REPRODUCIBILITY LEVEL:
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Always

STEPS:
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1. Login using admin credentials.
2. Install the "Document and Media Tree view" app.
3. Navigate to Site Cofig > Content and Data > Documents and Media.
5. Change the display style to "Tree".
6. Check the "+" and "-" (Expand and contract folder) icons.

CURRENT RESULT:
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- The "Expand" and "Contract" icons are not aligned correctly.
- The "Expand" and "Contract" icons are too small.

EXPECTED RESULT:
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- The "Expand" and "Contract" icons should be aligned correctly.
- The "Expand" and "Contract" icons should have a legible size.