Mark PipelineStage.Predefined as deprecated field

[khanhtc1202]

What this PR does / why we need it:

Which issue(s) this PR fixes:

Part of #4980

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

All modified and coverable lines are covered by tests ✅

Project coverage is 22.92%. Comparing base (4d53574) to head (15c1212).
Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #5236   +/-   ##
=======================================
  Coverage   22.92%   22.92%           
=======================================
  Files         420      420           
  Lines       45336    45336           
=======================================
  Hits        10395    10395           
  Misses      34144    34144           
  Partials      797      797           

Flag	Coverage Δ
	22.92% <ø> (ø)

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

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.