Tabs replaced with spaces in the generated razor file

[csaba-sagi-sonarsource]

Steps to reproduce:

1. Clone MudBlazor.
2. Enable emitting the generated files by setting <EmitCompilerGeneratedFiles>true</EmitCompilerGeneratedFiles>
3. Build the solution

When razor generates the code behind for line 3 of SectionHeader.razor, which contains a tab, it replaces the tab with four spaces.
Meaning the generated code will look like this:

#line 3 "C:\Projects\MudBlazor\src\MudBlazor.Docs\Components\SectionHeader.razor"
     if (!String.IsNullOrWhiteSpace(Title) && HideTitle == false)  // This line contains 5 spaces prefix instead of 1 tab
    {  // This line has the tab preserved

This is an issue since if one wants to do code analysis for the file and calls GetMappedLineSpan, it will not correctly map the location back to the razor file.