Remove order for stages in case of quick sync

[khanhtc1202]

What this PR does:

Remove stages' order (indexes) if a quick sync deployment is triggered.

Why we need it:

Previously, we planned to make plugins' order as stages order in case of multi-plugin applications. However, it is difficult to decide the order of the application's plugins, and the application's plugins may change, so it is better not to depend on that.

Which issue(s) this PR fixes:

This reverts what we did in #5231 and #5229

Does this PR introduce a user-facing change?:

• How are users affected by this change:
• Is this breaking change:
• How to migrate (if breaking change):

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 2 lines in your changes missing coverage. Please review.

Project coverage is 24.38%. Comparing base (cbbd67d) to head (c55a811).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
...p/pipedv1/plugin/kubernetes/deployment/pipeline.go	66.66%	1 Missing ⚠️
...app/pipedv1/plugin/kubernetes/deployment/server.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5292      +/-   ##
==========================================
- Coverage   24.39%   24.38%   -0.01%     
==========================================
  Files         443      443              
  Lines       46941    46927      -14     
==========================================
- Hits        11453    11445       -8     
+ Misses      34577    34571       -6     
  Partials      911      911              

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[Warashi]

Thank you

[ffjlabo]

🚀