ci: update ng-dev config and pullapprove

This updates the pullapprove to remove the auto labeling of requires: TGP and instead moves it to the ng-dev config for pr updates.

Author: thePunderWoman

.ng-dev/pull-request.mts

@@ -31,4 +31,7 @@ export const pullRequest: PullRequestConfig = {
     {type: 'check', name: 'zone-js'},
     {type: 'status', name: 'google-internal-tests'},
   ],
+
+  // labels to apply to a PR with commits that include files in the specified path
+  managedLabelByPath: [{label: 'requires: TGP', paths: ['//packages/core/primitives/']}],
 };

.pullapprove.yml

@@ -491,10 +491,6 @@ groups:
         - thePunderWoman # Jessica Janiuk
         - AndrewKushnir # Andrew Kushnir
         - atscott # Andrew Scott
-    labels:
-      pending: 'requires: TGP'
-      approved: 'requires: TGP'
-      rejected: 'requires: TGP'
 
   # External team required reviews
   primitives-shared:
@@ -512,10 +508,6 @@ groups:
         - tbondwilkinson # Tom Wilkinson
         - rahatarmanahmed # Rahat Ahmed
         - ENAML # Ethan Cline
-    labels:
-      pending: 'requires: TGP'
-      approved: 'requires: TGP'
-      rejected: 'requires: TGP'
 
   ####################################################################################
   # Override managed result groups