Automatic update from web-platform-tests
Replace assert_precondition with assert_equals in domparsing/ (#23007)
assert_precondition is deprecated (see
https://github.com/web-platform-tests/rfcs/blob/master/rfcs/assert_precondition_rename.md).
In this particular case, the assertion is actually checking for an
equality rather than an 'implements' phrase, so switch to assert_equals.
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wpt-commits: e65087045387dd4ecb9d5c675062a6643e00c7ad
wpt-pr: 23007
