[Draft] Release font resources to fix memory leak

[hiteshwpfmsft]

Fixes #6296

Description

Printing a large size of document ends up consuming a lot of memory. The change in the PR targets to address this issue.
This change releases the font resources after every four pages. We see huge memory consumption difference as the number of pages grow.
Also, with the change we make sure that all resources gests released once printing is completed.

Regression

Don't know.

Testing

Under testing.

Risk

Low.

[lindexi]

After reading xpsobjectmodel.h, I think your changes are correct.

Addition, the define of IXpsOMPartUriCollection in xpsobjectmodel.h:

    MIDL_INTERFACE("57C650D4-067C-4893-8C33-F62A0633730F")
    IXpsOMPartUriCollection : public IUnknown
    {
    public:
        virtual HRESULT STDMETHODCALLTYPE GetCount( 
            /* [retval][out] */ __RPC__out UINT32 *count) = 0;
        
        virtual HRESULT STDMETHODCALLTYPE GetAt( 
            /* [in] */ UINT32 index,
            /* [retval][out] */ __RPC__deref_out_opt IOpcPartUri **partUri) = 0;
        
        virtual HRESULT STDMETHODCALLTYPE InsertAt( 
            /* [in] */ UINT32 index,
            /* [in] */ __RPC__in_opt IOpcPartUri *partUri) = 0;
        
        virtual HRESULT STDMETHODCALLTYPE RemoveAt( 
            /* [in] */ UINT32 index) = 0;
        
        virtual HRESULT STDMETHODCALLTYPE SetAt( 
            /* [in] */ UINT32 index,
            /* [in] */ __RPC__in_opt IOpcPartUri *partUri) = 0;
        
        virtual HRESULT STDMETHODCALLTYPE Append( 
            /* [in] */ __RPC__in_opt IOpcPartUri *partUri) = 0;
        
    };