test: update backend config, frontend utilities, and test coverage (#8671)

* ✨ (custom-get-download-folders.ts): update default filename to include folderName variable to provide more context and improve user experience

* ✨ (custom-get-download-folders.ts): update folder name from "My Projects" to "Starter Project" for better clarity and consistency

* 📝 (.github/changes-filter.yaml): add new directory 'serialization' to components list for changes filtering
🐛 (general-bugs-truncate-results.spec.ts): fix typo in 'truncated' word and update timeout for better test reliability

* 🔧 (custom-get-download-folders.ts): Remove unnecessary conditional statement and update default filename for download to "flows.zip" for better clarity.

.github/changes-filter.yaml

@@ -54,6 +54,7 @@ components:
   - "src/backend/base/langflow/custom/**"
   - "src/backend/base/langflow/components/**"
   - "src/backend/base/langflow/initial_setup/**"
+  - "src/backend/base/langflow/serialization/**"
 
 workspace:
   - "src/backend/base/langflow/inputs/**"

src/frontend/tests/extended/regression/general-bugs-truncate-results.spec.ts

@@ -22,17 +22,25 @@ test.skip(
         targetPosition: { x: 300, y: 300 },
       });
 
+    await page.getByTestId("input-list-plus-btn_urls-0").click();
+
     await page
       .getByTestId("inputlist_str_urls_0")
       .fill("https://docs.langflow.org/");
 
+    await page
+      .getByTestId("inputlist_str_urls_1")
+      .fill("https://www.langflow.org/");
+
+    await page.getByTitle("fit view").click();
+
     await page.getByTestId("default_slider_display_value").click();
-    await page.getByTestId("slider_input").fill("4");
+    await page.getByTestId("slider_input").fill("5");
 
     await page.getByTestId("button_run_url").click();
 
     await page.waitForSelector("text=built successfully", {
-      timeout: 30000,
+      timeout: 60000 * 3,
     });
 
     await page
@@ -43,7 +51,12 @@ test.skip(
       exact: true,
     });
 
-    expect(page.getByText(`[truncated`)).toBeVisible();
+    await page.waitForSelector("text=truncated", {
+      timeout: 3000,
+    });
+
+    const trucatedWordCount = await page.getByText(`[truncated`).count();
+    expect(trucatedWordCount).toBeGreaterThan(0);
 
     expect(page.locator("span.ag-header-cell-text").nth(1)).toHaveText("url");