Debug Sequence with <block/> creates unexpected instance type

[ReinhardKeil]

Describe the bug

NXP.MCXN947_DFP.psdc contains in line 54:

        <sequence name="EnableDebugMailbox">
          <block/>
          <control if="!(ReadAP(0x0) &amp; 0x40)">
            <!-- Check AHB-AP CSW DbgStatus to decide if need enable DebugMailbox -->

This creates in *.cbuild-run.yml:

    - name: EnableDebugMailbox
      blocks:
        - {}
        - if: "!(ReadAP(0x0) & 0x40)"

And then the error:

Execute: cbuild Simple.csolution.yml --context-set --packs
/Simple+MCXN947VDF.cbuild-run.yml:193:11 - error csolution: unexpected instance type

To Reproduce

Use this example example Simple_Device_project.zip and execute cbuild Simple.csolution.yml --context-set --packs

Expected behavior

<block/> should be ignored

Workaround

Remove <block/> from *.pdsc files.

Environment (please complete the following information):

• CMSIS-Toolbox 2.8.0
• pack: [email protected]

Additional context
Add any other context about the problem here.