Fix # - VAT Values display incorrectly on Quotes->Service Line Items, if Significant Figures = 0

[serhiisamko091184]

Description

When the user sets their Significant Digits to 0 (via their Profile)

When viewing the Quotes detailview, any "0" values are stripped, leading to displaying errors

ie:
"0%" becomes "%"
"20%" becomes "2%"

Motivation and Context

How To Test This

1. Set sign digits to 0 in settings: Profile -> Advanced Tab -> .
2. Go to Quotes module -> Create quote -> add service line
3. Check tax column on DetailView:
   

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)

Final checklist

• My code follows the code style of this project found here.
• My change requires a change to the documentation.
• I have read the How to Contribute guidelines.