Ignore nodoc for MAX_NUMBER_OF_DYNAMIC_RULES

[oliverdunk]

In the chrome.declarativeNetRequest types, we are showing an unhelpful output for MAX_NUMBER_OF_DYNAMIC_RULES:

This has actually been present for many Chrome versions but when we added session rules, we added nodoc thinking we would remove it in a future version.

As part of implementing safe rules, however, we're bringing it back. This confused chrome-types since it essentially went missing for a while.

There are two commits here:

• The first is the actual fix and just ignores the nodoc.
• The second is adding some comments and a test for a "this should never be hit" section of code that I got an understanding of as part of investigating this. It isn't really needed, but I had already written it before I realised that so felt worth committing.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (85e3dd9) 43.86% compared to head (baa1077) 44.03%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #61      +/-   ##
==========================================
+ Coverage   43.86%   44.03%   +0.17%     
==========================================
  Files          21       21              
  Lines        4024     4026       +2     
  Branches      264      264              
==========================================
+ Hits         1765     1773       +8     
+ Misses       2259     2253       -6     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.