refactor(cli): restrict common flags to subcommands branches where they're applicable

[krancour]

Fixes #1353

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[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (8f03cfd) 45.44% compared to head (be15fdd) 45.43%.

Files	Patch %	Lines
internal/cli/cmd/login/login.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1360      +/-   ##
==========================================
- Coverage   45.44%   45.43%   -0.01%     
==========================================
  Files         136      136              
  Lines       11718    11719       +1     
==========================================
  Hits         5325     5325              
- Misses       6202     6203       +1     
  Partials      191      191              

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