Absorb qtwebchannel submodule

commit880b59b5e038126396656331b480c6cf975e0cbc
parent9a1215e4a50ec80ea1bd08f5f3c629524937c91d
parentec53a2e1809fffa5f80d304c7f7000f950e60bb0
authormozsearch-qt index builder <mozsearch-qt@localhost>
committermozsearch-qt index builder <mozsearch-qt@localhost>
commit timeThu, 29 Oct 2026 16:27:40 +0000