biology/ugene: fix build on aarch64
The bundled copy of htslib is missing required assembly source files,
causing build failure due to undefined symbols an aarch64.
Unbundle htslib and use our working port biology/htslib instead.
Approved by: makc (maintainer)
MFH: 2026Q2
PR: 293379
(cherry picked from commit 372104dd71f6e0b1d463713793510b0f7ca5f0a8)