Support awaiting a parenthesized 'switch' or 'with' expression

[sharwell]

Fixes #3460

[codecov]

Codecov Report

Merging #3462 (a7491aa) into master (49ef1d5) will decrease coverage by 3.28%.
The diff coverage is 96.42%.

❗ Current head a7491aa differs from pull request most recent head 16b767b. Consider uploading reports for the commit 16b767b to get more accurate results

@@            Coverage Diff             @@
##           master    #3462      +/-   ##
==========================================
- Coverage   93.23%   89.94%   -3.29%     
==========================================
  Files        1063     1063              
  Lines      113073   109694    -3379     
  Branches     3980     3979       -1     
==========================================
- Hits       105423    98669    -6754     
- Misses       6630     9955    +3325     
- Partials     1020     1070      +50