New binary 'mariadb-migrate-config-file' broke cross-compilation of MariaDB

Large Linux-distros like Debian not only support multiple architectures, but also cross-compilation targeting one arch but running on a different host.

In Debian MariaDB versions up to 11.8.6 have been cross-compiling just fine as seen at https://crossqa.debian.net/src/mariadb. However, with 11.8.7/8 a new binary `mariadb-migrate-config-file` cannot be cross-compiled, and thus cross-compilation fails in Debian on the binary `mariadb-migrate-config-file` missing.

Example log:
https://crossqa.debian.net/build/mariadb_1:11.8.8-1_riscv64_20260607222107.log

dh_install: warning: Cannot find (any matches for) "usr/bin/mariadb-migrate-config-file" (tried in ., debian/tmp)

dh_install: warning: mariadb-client-core missing files: usr/bin/mariadb-migrate-config-file

	install -m0755 -d debian/mariadb-client-core//usr/bin

	cp --reflink=auto -a debian/tmp/usr/bin/mariadb debian/tmp/usr/bin/mariadb-check debian/mariadb-client-core//usr/bin/

dh_install: error: missing files, aborting

make: *** [debian/rules:235: binary-arch] Error 255

I tried to fix this with patch https://salsa.debian.org/mariadb-team/mariadb-server/-/blob/f1b559421db65ce572e235fd281fa40cad73e200/debian/patches/cross-compile-fix-migrate-config.patch but can't get it working. Filing this bug upstream to see if anyone has advice on what is wrong, or if there are others running into this same issue.