fix: do not mutate live when managed namespace enabled

[leoluz]

While testing managed namespaces locally I noticed 2 issues:

• When enabled, managed namespace shouldn't mutate the live state directly.
• We can't set resource tracking without changing the diff logic to handle it correctly. More details in Display managed namespaces in Argo CD UI #11196

Signed-off-by: Leonardo Luz Almeida leonardo_almeida@intuit.com

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• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this does not need to be in the release notes.
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[leoluz]

@crenshaw-dev and other possible reviewers: Once approved, please do not merge. I need to update gitops-engine dependency in this PR first.

[codecov]

Codecov Report

Base: 45.63% // Head: 45.60% // Decreases project coverage by -0.03% ⚠️

Coverage data is based on head (f4337ac) compared to base (46ae472).
Patch coverage: 83.33% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #11197      +/-   ##
==========================================
- Coverage   45.63%   45.60%   -0.04%     
==========================================
  Files         238      239       +1     
  Lines       28953    28969      +16     
==========================================
- Hits        13214    13211       -3     
- Misses      13920    13939      +19     
  Partials     1819     1819              

Impacted Files	Coverage Δ
controller/sync_namespace.go	87.50% <83.33%> (+2.50%)	⬆️
cmd/argocd/commands/admin/admin.go	14.40% <0.00%> (-0.12%)	⬇️
cmd/argocd/commands/admin/initial_password.go	0.00% <0.00%> (ø)

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