[Release-1.26] Added error when cluster reset while using server flag

[vitorsavian]

Proposed Changes

Backport
Handle when the user tries to --cluster-reset when using the --server flag

Types of Changes

Backport
Handling Error

Verification

k3s server --server 11.22.33.44 --cluster-reset

Testing

Linked Issues

• [Release-1.26] - The server flag should be skipped or present an error during a cluster-reset  rancher/rke2#4806
• [Release-1.26] - The server flag should be skipped or present an error during a cluster-reset #8490

User-Facing Change

The user will receive a error when --cluster-reset with the --server flag

Further Comments

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (2fc9a40) 19.47% compared to head (fbf9ce4) 19.48%.
Report is 5 commits behind head on release-1.26.

Additional details and impacted files

@@              Coverage Diff              @@
##           release-1.26    #8456   +/-   ##
=============================================
  Coverage         19.47%   19.48%           
=============================================
  Files                83       83           
  Lines              5606     5605    -1     
=============================================
  Hits               1092     1092           
+ Misses             4288     4287    -1     
  Partials            226      226           

Flag	Coverage Δ
unittests	19.48% <ø> (+<0.01%)	⬆️

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see 1 file with indirect coverage changes

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