testing/thelounge: disable check on loongarch64

Disable check on loongarch64 due to 2 failed tests (rebuild error log).

[92m [0m[32m 242 passing[0m[90m (13s)[0m
[31m  2 failing[0m

[0m  1) SQLite Message Storage
       should retrieve latest LIMIT messages in order:
[0m[31m     Error: Timeout of 5000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (/home/buildozer/aports/testing/thelounge/src/thelounge-4.4.3/test/plugins/sqlite.ts)[0m[90m
      at listOnTimeout (node:internal/timers:573:17)
      at processTimers (node:internal/timers:514:7)
[0m
[0m  2) SQLite Message Storage
       should search messages:

      [31mAssertionError: expected [ Msg{ from: { …(2) }, …(30) }, …(88) ] to have a length of 100 but got 89[0m
      [32m+ expected[0m [31m- actual[0m

      [31m-89[0m
      [32m+100[0m
      [0m[90m
      at Context.<anonymous> (test/plugins/sqlite.ts:396:35)
[0m