bugfix: use registered app name as final app name list

[kakaZhou719]

Describe what this PR does / why we need it

Kuebfile:

FROM scratch
APP app1 local://app1.yaml
APP app2 local://app2.yaml
APP app3 local://app3.yaml
LAUNCH ["app1","app2"]

apiVersion: sealer.io/v2
kind: Cluster
metadata:
  name: my-cluster
spec:
  hosts:
  - ips:
    - 172.16.26.168
    roles:
    - master
    ssh: {}
  image: myapp:v1
  appNames: ["app3"]
  ssh:
    passwd: xxxx
    pk: /root/.ssh/id_rsa
    port: "22"
    user: root
status: {}

Does this pull request fix one issue?

Fixes #2166

Describe how you did it

Describe how to verify it

Special notes for reviews

[codecov-commenter]

Codecov Report

Patch coverage: 100.00% and project coverage change: -6.05 ⚠️

Comparison is base (e04f69f) 19.33% compared to head (2e39ed6) 13.28%.

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Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2167      +/-   ##
==========================================
- Coverage   19.33%   13.28%   -6.05%     
==========================================
  Files          96      260     +164     
  Lines        8918    22228   +13310     
==========================================
+ Hits         1724     2953    +1229     
- Misses       6953    18879   +11926     
- Partials      241      396     +155     

Flag	Coverage Δ
e2e-tests	9.22% <ø> (?)
unit-tests	19.34% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/application/v2app.go	30.05% <100.00%> (+0.36%)	⬆️

... and 164 files with indirect coverage changes

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[Stevent-fei]

LGTM