Fix machine rollout during mgmt delete

[tatlat]

Issue #, if available:

Description of changes:
Deleting a mgmt cluster after upgrading managment-components caused new machines to rollout during delete. Rather than waiting for the machines to rollout during delete, we should keep the EKS-Anywhere cluster on the bootstrap paused, and allow the controller to delete while the cluster is still paused.

Testing (if applicable):

Documentation added/planned (if applicable):

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (4583834) 73.48% compared to head (fe794e4) 73.60%.
Report is 126 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7674      +/-   ##
==========================================
+ Coverage   73.48%   73.60%   +0.11%     
==========================================
  Files         579      588       +9     
  Lines       36357    37146     +789     
==========================================
+ Hits        26718    27342     +624     
- Misses       7875     8013     +138     
- Partials     1764     1791      +27     

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[mitalipaygude]

/woof

[eks-distro-bot]

@mitalipaygude:

In response to this:

/woof

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[tatlat]

/approve

[eks-distro-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: tatlat

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[mitalipaygude]

/cherrypick release-0.19

[eks-distro-pr-bot]

@mitalipaygude: new pull request created: #7676

In response to this:

/cherrypick release-0.19

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