[Feature Request] Unable to customize the "Inherited members" section using class.header.tmpl.partial when using apiPage outputFormat.

**Is your feature request related to a problem? Please describe.**
* I am using DocFX to generate .NET documentation. I set the outputFormat=apiPage.
* I am also using the class.header.tmpl.partial file to customize the "Inherited Members" section. The customizations I provide in this partial file for the "inherited members" is not used when I set outputFormat=APIPage. Once I remove this setting, the customizations in the class.header.tmpl.partial are respected.

**Describe the solution you'd like**
I want to use the outputFormat = apiPage setting and still have the ability to customize the "Inherited Members" section in the html output using class.header.tmpl.partial

**Additional context**
Related issue with using outputFormat = apiPage: https://github.com/dotnet/docfx/issues/9934