Fix LFS pull predicate

Author: MathiasMagnus

scripts/install_linux.sh

@@ -91,7 +91,7 @@ if [[ "$FEATURE_LOADTESTS" =~ "Vulkan" ]]; then
   fi
 fi
 
-if [[ "$FEATURE_TESTS" = "ON" ]]; then
+if [[ (-n "$FEATURE_LOADTESTS" && "$FEATURE_LOADTESTS" != "OFF") || ("$FEATURE_TESTS" = "ON") ]]; then
   git lfs pull --include=tests/srcimages,tests/testimages
 fi
 

scripts/install_macos.sh

@@ -20,7 +20,7 @@ git lfs install
 git lfs version
 gem install xcpretty
 
-if [[ "$FEATURE_TESTS" = "ON" ]]; then
+if [[ (-n "$FEATURE_LOADTESTS" && "$FEATURE_LOADTESTS" != "OFF") || ("$FEATURE_TESTS" = "ON") ]]; then
   git lfs pull --include=tests/srcimages,tests/testimages
 fi