Fix value relation editor widget serious warnings #7638

Job	Run time
build (arm64-android, android_arm64_v8a, OFF, android-arm64)	9m 20s
build (arm64-android, android_arm64_v8a, OFF, android-arm64)	9m 20s
build (arm64-android, android_arm64_v8a, ON, android-arm64)	10m 24s
build (arm64-android, android_arm64_v8a, ON, android-arm64)	10m 24s
build (arm-neon-android, android_armv7, OFF, android-arm-neon)	8m 51s
build (arm-neon-android, android_armv7, OFF, android-arm-neon)	8m 51s
build (arm-neon-android, android_armv7, ON, android-arm-neon)	8m 27s
build (arm-neon-android, android_armv7, ON, android-arm-neon)	8m 27s
build (x64-android, android_x86_64, OFF, android-x64)	9m 59s
build (x64-android, android_x86_64, OFF, android-x64)	9m 59s
build (x64-android, android_x86_64, ON, android-x64)	1h 16m 43s
build (x64-android, android_x86_64, ON, android-x64)	8m 26s
build (x86-android, android_x86, OFF, android-x86)	8m 58s
build (x86-android, android_x86, OFF, android-x86)	8m 58s
build (x86-android, android_x86, ON, android-x86)	10m 7s
build (x86-android, android_x86, ON, android-x86)	10m 7s
comment (pr)	0s
comment (pr)	4s
comment (commit)	0s
comment (commit)	0s
deploy to play store	0s
deploy to play store	0s
	3h 37m 25s

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