Update workflow name to "Copilot Setup Steps" and add pull_request trigger

Co-authored-by: ronniegeraghty <28957151+ronniegeraghty@users.noreply.github.com>

Author: 2 people

.github/workflows/copilot-setup-steps.yml

@@ -1,4 +1,4 @@
-name: Copilot Environment Setup
+name: Copilot Setup Steps
 
 # This workflow sets up the development environment for GitHub Copilot coding agent
 # It leverages the existing devcontainer configuration to ensure consistency
@@ -32,6 +32,12 @@ on:
       - 'Cargo.toml'
       - '.devcontainer/**'
       - '.github/workflows/copilot-setup-steps.yml'
+  pull_request:
+    paths:
+      - 'rust-toolchain.toml'
+      - 'Cargo.toml'
+      - '.devcontainer/**'
+      - '.github/workflows/copilot-setup-steps.yml'
 
 jobs:
   setup-environment: