Fix yarn cache and shellcheck issues in Pro workflows

This commit fixes two CI failures:

1. **Yarn cache error for execjs-compatible-dummy**:
   - Changed cache-dependency-path from single file to glob pattern
   - Now uses 'react_on_rails_pro/**/yarn.lock' to match all yarn.lock files
   - Matches pattern used in main package workflows
   - Fixes: Error: Could not get yarn cache folder path

2. **Shellcheck SC2209 warnings in background process commands**:
   - Added `true` after background process commands
   - Satisfies shellcheck requirement for explicit command success
   - Affects pro-integration-tests.yml lines 207-216, 384-393

All three Pro workflow files updated:
- .github/workflows/pro-lint.yml
- .github/workflows/pro-package-tests.yml
- .github/workflows/pro-integration-tests.yml

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: AbanoubGhadban

.github/workflows/pro-integration-tests.yml

@@ -32,7 +32,7 @@ jobs:
         with:
           node-version: 22
           cache: yarn
-          cache-dependency-path: 'react_on_rails_pro/yarn.lock'
+          cache-dependency-path: 'react_on_rails_pro/**/yarn.lock'
 
       - name: Print system information
         run: |
@@ -121,7 +121,7 @@ jobs:
         with:
           node-version: 22
           cache: yarn
-          cache-dependency-path: 'react_on_rails_pro/yarn.lock'
+          cache-dependency-path: 'react_on_rails_pro/**/yarn.lock'
 
       - name: Print system information
         run: |
@@ -208,11 +208,13 @@ jobs:
         run: |
           cd spec/dummy
           yarn run node-renderer &
+          true
 
       - name: Run Rails server in background
         run: |
           cd spec/dummy
           RAILS_ENV=test rails server &
+          true
 
       - name: Wait for Rails server to start
         run: |
@@ -298,7 +300,7 @@ jobs:
         with:
           node-version: 22
           cache: yarn
-          cache-dependency-path: 'react_on_rails_pro/yarn.lock'
+          cache-dependency-path: 'react_on_rails_pro/**/yarn.lock'
 
       - name: Print system information
         run: |
@@ -385,11 +387,13 @@ jobs:
         run: |
           cd spec/dummy
           yarn run node-renderer &
+          true
 
       - name: Run Rails server in background
         run: |
           cd spec/dummy
           RAILS_ENV=test rails server &
+          true
 
       - name: Wait for Rails server to start
         run: |

.github/workflows/pro-lint.yml

@@ -31,7 +31,7 @@ jobs:
         with:
           node-version: 22
           cache: yarn
-          cache-dependency-path: 'react_on_rails_pro/yarn.lock'
+          cache-dependency-path: 'react_on_rails_pro/**/yarn.lock'
 
       - name: Print system information
         run: |

.github/workflows/pro-package-tests.yml

@@ -32,7 +32,7 @@ jobs:
         with:
           node-version: 22
           cache: yarn
-          cache-dependency-path: 'react_on_rails_pro/yarn.lock'
+          cache-dependency-path: 'react_on_rails_pro/**/yarn.lock'
 
       - name: Print system information
         run: |
@@ -113,7 +113,7 @@ jobs:
         with:
           node-version: ${{ matrix.node-version }}
           cache: yarn
-          cache-dependency-path: 'react_on_rails_pro/yarn.lock'
+          cache-dependency-path: 'react_on_rails_pro/**/yarn.lock'
 
       - name: Print system information
         run: |