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Error msg prompts is not meaningful while attaching a nvdimm device with unaligned address 

Please provide the package NVR for which bug is seen:

rpm -q libvirt qemu-kvm
libvirt-9.5.0-7.el9_3.x86_64
qemu-kvm-8.1.0-3.el9.x86_64

How reproducible:

100%

Steps to reproduce

1. Start a guest with below config xml:

<maxMemory slots="16" unit="KiB">20485760</maxMemory>
<memory unit="KiB">2097152</memory>
<currentMemory unit="KiB">2097152</currentMemory>

...
<numa>
      <cell id="0" cpus="0-5" memory="2097152" unit="KiB"/>
</numa>

virsh start vm1
Domain 'vm1' started

2. Prepare nvdimm backed file

 # truncate -s 128M /tmp/nvdimm

3. Attach a nvdimm device with unaligned address:

cat mem.xml 
<memory model='nvdimm'>
  <source>
    <path>/tmp/nvdimm</path>

    <alignsize unit='KiB'>2048</alignsize>
  </source>     
  <target>       
    <size unit='KiB'>131072</size>       
    <node>0</node>
  </target> 
  <address type='dimm' slot='0' base='0x100000001'/>   
</memory>

 # virsh attach-device vm1 mem.xml 
error: Failed to attach device from mem.xml
error: internal error: unable to execute QEMU command 'device_add': nvdimm is not enabled: missing 'nvdimm' in '-M'

Expected results

Error msg should be more meaningful to indicate the root cause or the correct way to config

Actual results

Error msg "nvdimm is not enabled: missing 'nvdimm' in '-M'" makes the user confused

Additional info

When start a nvdimm device with unaligned address the error msg is showing the correct config:

guest config xml like below:

<maxMemory slots="16" unit="KiB">20485760</maxMemory>
<memory unit="KiB">2228224</memory>
<currentMemory unit="KiB">2097152</currentMemory>

...
<numa>
      <cell id="0" cpus="0-5" memory="2097152" unit="KiB"/>

 </numa>

...

<memory model="nvdimm">
      <source>
        <path>/tmp/nvdimm</path>
        <alignsize unit="KiB">2048</alignsize>
      </source>
      <target>
        <size unit="KiB">131072</size>
        <node>0</node>
      </target>
      <address type="dimm" slot="0" base="0x100000001"/>
</memory>

virsh start vm1
error: Failed to start domain 'vm1'
error: internal error: QEMU unexpectedly closed the monitor (vm='vm1'): 2023-11-06T05:38:27.690433Z qemu-kvm: -device {"driver":"nvdimm","node":0,"memdev":"memnvdimm0","id":"nvdimm0","slot":0,"addr":4294967297}: address must be aligned to 0x200000 bytes