ovsdb-idl: Fix returning non-existent rows from uuid lookup. #3017

Job	Run time
libreswan (ubuntu-24.04)	2m 31s
osx clang --disable-ssl	1m 49s
dpdk gcc (ubuntu-24.04)	2m 0s
linux deb no dpdk	5m 23s
linux rpm fedora	3m 26s
clang-analyze-cache	10m 7s
linux gcc test --enable-shared	11m 17s
linux clang c99	2m 56s
linux clang --disable-ssl	2m 36s
linux clang test --enable-shared	11m 25s
linux gcc check check-dpdk dpdk	18m 49s
linux clang address,undefined test	16m 28s
linux gcc --enable-afxdp	2m 51s
linux gcc c99	2m 49s
linux gcc test -ljemalloc	9m 4s
linux gcc --disable-ssl	2m 34s
linux clang test -ljemalloc	9m 35s
linux clang --enable-afxdp	2m 49s
linux gcc test	8m 13s
linux clang address,undefined check-kernel 100-	22m 31s
linux gcc dpdk-shared	2m 59s
linux gcc check-kernel 100-	19m 27s
linux gcc dpdk --enable-shared	3m 43s
linux clang dpdk --enable-shared	3m 54s
linux gcc check-kernel -100	10m 45s
linux gcc check-offloads -100	9m 45s
linux clang address,undefined dpdk check-system-userspace	16m 18s
linux gcc check-ovsdb-cluster	7m 5s
linux clang dpdk-shared --enable-shared	3m 42s
linux clang check check-dpdk dpdk	19m 11s
linux gcc check-offloads 100-	12m 34s
linux gcc dpdk check-system-tso	12m 57s
linux clang dpdk-shared	3m 29s
linux clang address,undefined check-kernel -100	13m 35s
linux gcc dpdk check-system-userspace	13m 44s
linux gcc m32 --disable-ssl	2m 48s
linux gcc dpdk check-afxdp	12m 18s
linux gcc dpdk-shared --enable-shared	3m 32s
clang-analyze	11m 8s
	5h 32m 7s

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