BREAKING(cli/unstable): rename refreshMilliseconds to interval

[timreichen]

This PR renames ProgressBarOptions.refreshMilliseconds to ProgressBarOptions.interval in order to align with PollOptions.interval and SpinnerOptions.interval.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.43%. Comparing base (a3a6ef6) to head (0d00de1).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7094   +/-   ##
=======================================
  Coverage   94.43%   94.43%           
=======================================
  Files         630      630           
  Lines       50566    50566           
  Branches     8969     8969           
=======================================
  Hits        47750    47750           
  Misses       2247     2247           
  Partials      569      569           

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