fix(js): handle resolution from within node_module in the sync generator (#29412)

closed #29411

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## Current Behavior
<!-- This is the behavior we have today -->
The resolve function from ts.System returning the full path, and so
including the workspaceRoot that is also append by the FsTree

## Expected Behavior
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-->
Resolution within node_modules are correctly followed

## Related Issue(s)
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merged. -->

Fixes #29411

Author: beaussan

packages/js/src/generators/typescript-sync/typescript-sync.ts

@@ -114,10 +114,20 @@ export async function syncGenerator(tree: Tree): Promise<SyncGeneratorResult> {
   const tsSysFromTree: ts.System = {
     ...ts.sys,
     fileExists(path) {
-      return tsconfigExists(tree, tsconfigInfoCaches, path);
+      // Given ts.System.resolve resolve full path for tsconfig within node_modules
+      // We need to remove the workspace root to ensure we don't have double workspace root within the Tree
+      const correctPath = path.startsWith(tree.root)
+        ? relative(tree.root, path)
+        : path;
+      return tsconfigExists(tree, tsconfigInfoCaches, correctPath);
     },
     readFile(path) {
-      return readRawTsconfigContents(tree, tsconfigInfoCaches, path);
+      // Given ts.System.resolve resolve full path for tsconfig within node_modules
+      // We need to remove the workspace root to ensure we don't have double workspace root within the Tree
+      const correctPath = path.startsWith(tree.root)
+        ? relative(tree.root, path)
+        : path;
+      return readRawTsconfigContents(tree, tsconfigInfoCaches, correctPath);
     },
   };