fix(core): do not run sync generators when running tasks in ci (#30591)

## Current Behavior

When running tasks, Nx will run and check the sync generators associated
with the task graph. While locally this is desirable to ensure the code
is always up to date while making changes, in CI, we don't make changes
that need to be synced or checked for every task. This is suboptimal,
and it results in duplicate processing.

## Expected Behavior

Sync generators should not run when running tasks in CI. To validate the
sync status, it is recommended to have a dedicated early step in the CI
pipeline that runs `nx sync:check` once.

## Related Issue(s)

Fixes #

(cherry picked from commit 220023d)

Author: leosvelperez

packages/nx/src/tasks-runner/run-command.ts

@@ -299,7 +299,7 @@ async function ensureWorkspaceIsInSyncAndGetGraphs(
     extraOptions
   );
 
-  if (nxArgs.skipSync) {
+  if (nxArgs.skipSync || isCI()) {
     return { projectGraph, taskGraph };
   }
 
@@ -333,10 +333,9 @@ async function ensureWorkspaceIsInSyncAndGetGraphs(
   const resultBodyLines = getSyncGeneratorSuccessResultsMessageLines(results);
   const fixMessage =
     'Make sure to run `nx sync` to apply the identified changes or set `sync.applyChanges` to `true` in your `nx.json` to apply them automatically when running tasks in interactive environments.';
-  const willErrorOnCiMessage = 'This will result in an error in CI.';
 
-  if (isCI() || !process.stdout.isTTY) {
-    // If the user is running in CI or is running in a non-TTY environment we
+  if (!process.stdout.isTTY) {
+    // If the user is running a non-TTY environment we
     // throw an error to stop the execution of the tasks.
     if (areAllResultsFailures) {
       output.error({
@@ -394,7 +393,6 @@ async function ensureWorkspaceIsInSyncAndGetGraphs(
         ...resultBodyLines,
         '',
         'Your workspace is set to not apply the identified changes automatically (`sync.applyChanges` is set to `false` in your `nx.json`).',
-        willErrorOnCiMessage,
         fixMessage,
       ],
     });
@@ -418,10 +416,12 @@ async function ensureWorkspaceIsInSyncAndGetGraphs(
     title: outOfSyncTitle,
     bodyLines: [
       ...resultBodyLines,
-      '',
-      nxJson.sync?.applyChanges === true
-        ? 'Proceeding to sync the identified changes automatically (`sync.applyChanges` is set to `true` in your `nx.json`).'
-        : willErrorOnCiMessage,
+      ...(nxJson.sync?.applyChanges === true
+        ? [
+            '',
+            'Proceeding to sync the identified changes automatically (`sync.applyChanges` is set to `true` in your `nx.json`).',
+          ]
+        : []),
     ],
   });