Use silent=TRUE to suppress tables() output

[MichaelChirico]

tables() tests need to either provide output= or silent=TRUE or they spill output to the test log.

Split off from #7833 to keep that one purely changes to other.Rraw.

[MichaelChirico]

This one is trivial enough to just merge.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.01%. Comparing base (d8f5c63) to head (d3cb1a1).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7857      +/-   ##
==========================================
- Coverage   99.02%   99.01%   -0.01%     
==========================================
  Files          88       88              
  Lines       17286    17286              
==========================================
- Hits        17117    17116       -1     
- Misses        169      170       +1     

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