fix(assert): accept abstract classes

[0f-0b]

Makes this work:

import { assertInstanceOf } from "jsr:@std/assert/instance-of";

assertInstanceOf([].values(), Iterator);

[0f-0b]

These types are now unused and should probably be deprecated.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.27%. Comparing base (05b6d7e) to head (a2145fe).
Report is 10 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5978      +/-   ##
==========================================
- Coverage   96.29%   96.27%   -0.02%     
==========================================
  Files         493      493              
  Lines       39530    39528       -2     
  Branches     5833     5833              
==========================================
- Hits        38065    38057       -8     
- Misses       1423     1429       +6     
  Partials       42       42              

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

[kt3k]

LGTM. Nice!