community/akonadi: disable building of tests on armv7

It currently fails to compile and we need to unblock the builder:

[01m[K/usr/include/c++/14.2.0/bits/stl_vector.h:369:49:[m[K [01;31m[Kerror: [m[Kinvalid use of incomplete type '[01m[Kclass Akonadi::Server::QueryBuilder[m[K'
  369 |                       [01;31m[K_M_impl._M_end_of_storage - _M_impl._M_start[m[K);
      |                       [01;31m[K~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~[m[K
[01m[K/home/buildozer/aports/community/akonadi/src/akonadi-24.08.0/autotests/server/querybuildertest.h:17:7:[m[K [01;36m[Knote: [m[Kforward declaration of '[01m[Kclass Akonadi::Server::QueryBuilder[m[K'
   17 | class [01;36m[KQueryBuilder[m[K;

community/akonadi/APKBUILD

@@ -5,7 +5,7 @@
 # group=kde-applications
 pkgname=akonadi
 pkgver=24.08.0
-pkgrel=0
+pkgrel=1
 pkgdesc="A cross-desktop storage service for PIM data and meta data providing concurrent read, write, and query access"
 # ppc64le, s390x, riscv64, armhf and loongarch64 blocked by kaccounts-integration
 arch="all !armhf !ppc64le !s390x !riscv64 !loongarch64"
@@ -54,13 +54,19 @@ build() {
 	# make -dbg smaller
 	export CFLAGS="$CFLAGS -g1"
 	export CXXFLAGS="$CXXFLAGS -g1"
+
+	case "$CARCH" in
+		armv7) tests=-DBUILD_TESTING=OFF ;;
+		*) tests=-DBUILD_TESTING=ON ;;
+	esac
 	# akonadi recurses while walking e-mail threads, so give it a decent stack
 	LDFLAGS="$LDFLAGS -Wl,-z,stack-size=1024768" \
 	cmake -B build -G Ninja \
 		-DCMAKE_BUILD_TYPE=MinSizeRel \
 		-DCMAKE_INSTALL_PREFIX=/usr \
 		-DCMAKE_INSTALL_LIBDIR=lib \
-		-DBUILD_DESIGNERPLUGIN=ON
+		-DBUILD_DESIGNERPLUGIN=ON \
+		$tests
 	cmake --build build
 }