Fix cleaning up the test directory on windows/macos CI

The windows and macos CI run multiple tests in different build directories as the same user.
Since #3290 this means that the tests use the same temporary directory, and the cleanup_test may remove tests from other runs.
This adds an environment variable KUZU_TEST_TMP_DIR which can be used to configure the temp directory, and uses it to create job-specific test directories on the runner machines

.github/workflows/ci-workflow.yml

@@ -237,6 +237,8 @@ jobs:
 
       - name: Test
         shell: cmd
+        env:
+          KUZU_TEST_TMP_DIR: ${{ env.TEMP }}/kuzu-${{ env.RUN_ID }}
         run: |
           call "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvars64.bat"
           make test
@@ -370,7 +372,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
-    
+
       # For `napi.h` header.
       - name: Ensure Node.js dependencies
         run: npm install --include=dev
@@ -417,6 +419,8 @@ jobs:
         run: make all
 
       - name: Test
+        env:
+          KUZU_TEST_TMP_DIR: ${{ env.TEMP }}/kuzu-${{ env.RUN_ID }}
         run: |
           ulimit -n 10240
           make test
@@ -538,6 +542,8 @@ jobs:
           cat postgres_scanner.test
 
       - name: Extension test
+        env:
+          KUZU_TEST_TMP_DIR: ${{ env.TEMP }}/kuzu-${{ env.RUN_ID }}
         run: |
           cd scripts/ && python3 http-server.py &
           make extension-test && make clean
@@ -575,6 +581,8 @@ jobs:
 
       - name: Extension test
         shell: cmd
+        env:
+          KUZU_TEST_TMP_DIR: ${{ env.TEMP }}/kuzu-${{ env.RUN_ID }}
         run: |
           call "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvars64.bat"
           cd scripts/ && start /b python http-server.py && cd ..

test/include/test_helper/test_helper.h

@@ -50,7 +50,12 @@ class TestHelper {
     static std::string getMillisecondsSuffix();
 
     inline static std::filesystem::path getTempDir() {
-        return std::filesystem::temp_directory_path() / "kuzu";
+        auto tempDir = std::getenv("KUZU_TEST_TEMP_DIR");
+        if (tempDir != nullptr) {
+            return std::filesystem::path(tempDir);
+        } else {
+            return std::filesystem::temp_directory_path() / "kuzu";
+        }
     }
 
     inline static std::string getTempDir(const std::string& name) {