Fix emitting dataChanged signal in TorrentsModel (#369) #1390

Job	Run time
build-flatpak	6m 26s
build-deb (debian:12)	4m 55s
build-rpm (fedora:39, gcc)	5m 29s
build-windows-mingw	7m 52s
build-deb (ubuntu:24.04)	6m 28s
build-rpm (fedora:39, clang)	6m 29s
build-deb (ubuntu:24.10)	5m 47s
build-rpm (fedora:40, gcc)	6m 18s
reuse-lint	16s
build-rpm (fedora:40, clang)	6m 28s
build-rpm (fedora:41, gcc)	5m 56s
build-rpm (fedora:41, clang)	7m 19s
build-rpm (opensuse/tumbleweed:latest, gcc)	6m 10s
build-macos / build-macos (arm64)	6m 43s
build-macos / build-macos (x86_64)	7m 16s
build-windows-msvc (msvc) / build-windows-msvc	1h 2m 5s
build-windows-msvc (msvc-clang) / build-windows-msvc	57m 11s
	3h 29m 8s

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