fix(cli): listen to random port for export and generate

[pi0]

Types of changes

• Bug fix (a non-breaking change which fixes an issue)
• New feature (a non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Description

Resolves #7597

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly. (PR: #)
• I have added tests to cover my changes (if not applicable, please state why)
• All new and existing tests are passing.

[codecov-commenter]

Codecov Report

Merging #7608 into dev will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##              dev    #7608   +/-   ##
=======================================
  Coverage   70.27%   70.27%           
=======================================
  Files          88       88           
  Lines        3748     3748           
  Branches     1019     1019           
=======================================
  Hits         2634     2634           
  Misses        905      905           
  Partials      209      209           

Flag	Coverage Δ
#unittests	70.27% <100.00%> (ø)

Impacted Files	Coverage Δ
packages/cli/src/commands/export.js	100.00% <100.00%> (ø)
packages/cli/src/commands/generate.js	93.75% <100.00%> (ø)

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