fix(pp): make some hints visible in the quiet mode

[favonia]

Close #1004. Close #1005. Close #1014. Close #967.

[codecov]

Codecov Report

Attention: Patch coverage is 89.13043% with 5 lines in your changes missing coverage. Please review.

Project coverage is 94.72%. Comparing base (44462f4) to head (ac56f45).

Files with missing lines	Patch %	Lines
internal/pp/fmt.go	81.25%	2 Missing and 1 partial ⚠️
internal/pp/queued.go	75.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1015      +/-   ##
==========================================
- Coverage   94.94%   94.72%   -0.23%     
==========================================
  Files          62       62              
  Lines        3366     3375       +9     
==========================================
+ Hits         3196     3197       +1     
- Misses        158      165       +7     
- Partials       12       13       +1     

Flag	Coverage Δ
unittests	94.72% <89.13%> (-0.23%)	⬇️

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[favonia]

TODO: avoid duplicate warnings for the same values