fix extract in itest

.github/other/patch-prebuilt.sh

@@ -9,14 +9,16 @@
 
 version="$1"
 
-# Add correct feature to `godot` dependency
+# Add correct feature to `godot` dependency.
 if [[ "$version" == "nightly" ]]; then
-    feature="custom-godot"
+  # Do not use extraFeatures="custom-godot" here. They just want to use nightly Godot with current API.
+  extraFeatures=""
 else
-    feature="api-$(echo "$version" | tr '.' '-')"
+  # Extract "major.minor" from "major.minor[.patch]".
+  extraFeatures=", \"api-$(echo "$version" | cut -d '.' -f 1,2)\""
 fi
 
 # Add extra features to the godot dependency (expects existing `features` key).
-sed -i "/^godot = /s/\(features = \[\([^]]*\)\)\]/\1, \"$feature\"]/g" itest/rust/Cargo.toml
+sed -i "/^godot = /s/\(features = \[\([^]]*\)\)\]/\1$extraFeatures]/g" itest/rust/Cargo.toml
 
-echo "Patched Cargo.toml for version $version (feature $feature)."
+echo "Patched Cargo.toml for version $version (extraFeatures $extraFeatures)."