fix: Typescript declaration files (#35244)

superset-frontend/plugins/plugin-chart-pivot-table/tsconfig.json

@@ -1,8 +1,15 @@
 {
   "extends": "../../tsconfig.json",
   "compilerOptions": {
+    // Path Resolution: Override baseUrl to maintain correct path mappings from parent config
+    // (e.g., "@apache-superset/core" -> "./packages/superset-core/src")
     "baseUrl": "../..",
-    "outDir": "lib"
+
+    // Directory Overrides: Parent config paths are relative to frontend root,
+    // but packages need paths relative to their own directory
+    "outDir": "lib",
+    "rootDir": "src",
+    "declarationDir": "lib"
   },
   "include": ["src/**/*", "types/**/*"],
   "exclude": ["src/**/*.test.*", "src/**/*.stories.*"],