ci: run workflows on master branch instead of nx

Update GitHub Actions workflow triggers to use the master branch
for push and pull_request events. Replace the previous nx branch
restriction so CI (build, make and e2e tests) runs on master and tag
events as intended.

This enables workflows to execute for changes merged to master and
aligns branch configuration across workflows.

.github/workflows/build-and-make.yaml

@@ -3,14 +3,12 @@ name: Build and Make Electron App
 on:
     push:
         branches:
-            - nx
-            # - master  # Uncomment this when ready to run on master branch
+            - master
         tags:
             - 'v*.*.*'
     pull_request:
         branches:
-            - nx
-            # - master  # Uncomment this when ready to run on master branch
+            - master
     workflow_dispatch:
 
 jobs:

.github/workflows/e2e-tests.yaml

@@ -3,10 +3,10 @@ name: 'Cross-Platform E2E Tests'
 on:
   push:
     branches:
-      - nx
+      - master
   pull_request:
     branches:
-      - nx
+      - master
 
 jobs:
   e2e-tests: