Bug: namespace prefix xlink for href on image is not defined

Description

mermaid 9.4 failed to provide namespace for xlink, so svg will not be rendered correctly:

A render result of c4 demo in official docs.

C4Context
    title System Context diagram for Internet Banking System

    Person(customerA, "Banking Customer A", "A customer of the bank, with personal bank accounts.")
    Person(customerB, "Banking Customer B")
    Person_Ext(customerC, "Banking Customer C")
    System(SystemAA, "Internet Banking System", "Allows customers to view information about their bank accounts, and make payments.")

    Person(customerD, "Banking Customer D", "A customer of the bank, <br/> with personal bank accounts.")

    Enterprise_Boundary(b1, "BankBoundary") {

      SystemDb_Ext(SystemE, "Mainframe Banking System", "Stores all of the core banking information about customers, accounts, transactions, etc.")

      System_Boundary(b2, "BankBoundary2") {
        System(SystemA, "Banking System A")
        System(SystemB, "Banking System B", "A system of the bank, with personal bank accounts.")
      }

      System_Ext(SystemC, "E-mail system", "The internal Microsoft Exchange e-mail system.")
      SystemDb(SystemD, "Banking System D Database", "A system of the bank, with personal bank accounts.")

      Boundary(b3, "BankBoundary3", "boundary") {
        SystemQueue(SystemF, "Banking System F Queue", "A system of the bank, with personal bank accounts.")
        SystemQueue_Ext(SystemG, "Banking System G Queue", "A system of the bank, with personal bank accounts.")
      }
    }

    BiRel(customerA, SystemAA, "Uses")
    BiRel(SystemAA, SystemE, "Uses")
    Rel(SystemAA, SystemC, "Sends e-mails", "SMTP")
    Rel(SystemC, customerA, "Sends e-mails to")

Anything will be fine by adding xlink namespace:

- <svg aria-labelledby="chart-title-mermaid-62" aria-roledescription="c4" role="graphics-document document" viewBox="0 -70 1871 1652" style="max-width: 1871px;"
  xmlns="http://www.w3.org/2000/svg" width="100%" id="mermaid-62">
+ <svg aria-labelledby="chart-title-mermaid-62" aria-roledescription="c4" role="graphics-document document" viewBox="0 -70 1871 1652" style="max-width: 1871px;"
  xmlns="http://www.w3.org/2000/svg"  xmlns:xlink="http://www.w3.org/1999/xlink" width="100%" id="mermaid-62">