Fix build java executable (#1316)

.github/jobs/BuildJavaExecutableJob.pkl

@@ -14,7 +14,7 @@ local command =
       // NOTE: `build` doesn't build native executables
       "\(project):build"
     }
-  }.join("\n")
+  }.join(" ")
 
 steps {
   new Common.Checkout {}

.github/workflows/build.yml

@@ -147,13 +147,7 @@ jobs:
     - uses: actions/checkout@v5
     - name: gradle build java executables
       shell: bash
-      run: |-
-        ./gradlew
-        --info --stacktrace -DpklMultiJdkTesting=true
-        pkl-doc:build
-        pkl-cli:build
-        pkl-codegen-java:build
-        pkl-codegen-kotlin:build
+      run: ./gradlew --info --stacktrace -DpklMultiJdkTesting=true pkl-doc:build pkl-cli:build pkl-codegen-java:build pkl-codegen-kotlin:build
     - name: Upload executable artifacts
       uses: actions/upload-artifact@v5
       with:

.github/workflows/main.yml

@@ -146,13 +146,7 @@ jobs:
     - uses: actions/checkout@v5
     - name: gradle build java executables
       shell: bash
-      run: |-
-        ./gradlew
-        --info --stacktrace -DpklMultiJdkTesting=true
-        pkl-doc:build
-        pkl-cli:build
-        pkl-codegen-java:build
-        pkl-codegen-kotlin:build
+      run: ./gradlew --info --stacktrace -DpklMultiJdkTesting=true pkl-doc:build pkl-cli:build pkl-codegen-java:build pkl-codegen-kotlin:build
     - name: Upload executable artifacts
       uses: actions/upload-artifact@v5
       with:

.github/workflows/release-branch.yml

@@ -146,13 +146,7 @@ jobs:
     - uses: actions/checkout@v5
     - name: gradle build java executables
       shell: bash
-      run: |-
-        ./gradlew
-        --info --stacktrace -DpklMultiJdkTesting=true
-        pkl-doc:build
-        pkl-cli:build
-        pkl-codegen-java:build
-        pkl-codegen-kotlin:build
+      run: ./gradlew --info --stacktrace -DpklMultiJdkTesting=true pkl-doc:build pkl-cli:build pkl-codegen-java:build pkl-codegen-kotlin:build
     - name: Upload executable artifacts
       uses: actions/upload-artifact@v5
       with:

.github/workflows/release.yml

@@ -146,13 +146,7 @@ jobs:
     - uses: actions/checkout@v5
     - name: gradle build java executables
       shell: bash
-      run: |-
-        ./gradlew
-        --info --stacktrace -DpklMultiJdkTesting=true -DreleaseBuild=true
-        pkl-doc:build
-        pkl-cli:build
-        pkl-codegen-java:build
-        pkl-codegen-kotlin:build
+      run: ./gradlew --info --stacktrace -DpklMultiJdkTesting=true -DreleaseBuild=true pkl-doc:build pkl-cli:build pkl-codegen-java:build pkl-codegen-kotlin:build
     - name: Upload executable artifacts
       uses: actions/upload-artifact@v5
       with: