fix: more whitespace/comment parsing fixes

[bartveneman]

follow up of #128

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.96%. Comparing base (ecfa668) to head (ab2f400).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #129      +/-   ##
==========================================
+ Coverage   94.91%   94.96%   +0.05%     
==========================================
  Files          16       16              
  Lines        2597     2623      +26     
  Branches      675      681       +6     
==========================================
+ Hits         2465     2491      +26     
  Misses        132      132              

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[codecov-commenter]

Bundle Report

Changes will increase total bundle size by 924 bytes (0.66%) ⬆️. This is within the configured threshold ✅

Detailed changes

Bundle name	Size	Change
@projectwallace/css-parser-esm	141.97kB	924 bytes (0.66%) ⬆️

Affected Assets, Files, and Routes:

view changes for bundle: @projectwallace/css-parser-esm

Assets Changed:

Asset Name	Size Change	Total Size	Change (%)
parse-*.js	26 bytes	8.62kB	0.3%
parse-*.js	300 bytes	22.84kB	1.33%
parse-*.js	598 bytes	26.08kB	2.35%

Files in parse-*.js:

• ./src/parse-anplusb.ts → Total Size: 8.18kB

Files in parse-*.js:

• ./src/parse-atrule-prelude.ts → Total Size: 22.04kB

Files in parse-*.js:

• ./src/parse-selector.ts → Total Size: 24.72kB