chore: adjust code-pushup-coverage target (#1098)

This PR includes:
- refactor the task graph of the `code-pushup-coverage` target

<img width="1289" height="327" alt="Screenshot 2025-09-02 at 14 16 35"
src="https://github.com/user-attachments/assets/f50e1c4e-a7b0-4edd-a223-8941727b4fa3"
/>

> [!note]
> This change is needed to be able to reuse the test work across
critical checks and conformance.
> The `dependsOn` setting also enables a graceful handling of cases
where a projects has not all of the listed test targets.

Author: BioPhoton

code-pushup.preset.ts

@@ -193,16 +193,10 @@ export const coverageCoreConfigNx = async (
   projectName?: string,
 ): Promise<CoreConfig> => {
   const targetNames = ['unit-test', 'int-test'];
-  const targetArgs = ['-t', ...targetNames];
   return {
     plugins: [
       await coveragePlugin({
-        coverageToolCommand: {
-          command: 'npx',
-          args: projectName
-            ? ['nx', 'run-many', '-p', projectName, ...targetArgs]
-            : ['nx', 'run-many', ...targetArgs],
-        },
+        // We do not need to run a coverageToolCommand. This is handled over the Nx task graph.
         reports: projectName
           ? [
               {

project.json

@@ -4,7 +4,18 @@
   "targets": {
     "code-pushup-js-packages": {},
     "code-pushup-lighthouse": {},
-    "code-pushup-coverage": {},
+    "code-pushup-coverage": {
+      "dependsOn": [
+        {
+          "target": "unit-test",
+          "projects": "*"
+        },
+        {
+          "target": "int-test",
+          "projects": "*"
+        }
+      ]
+    },
     "code-pushup-eslint": {},
     "code-pushup-jsdocs": {},
     "code-pushup-typescript": {},