Temporarily bring back sln for CI

Author: hez2010

.github/workflows/cd-sideload-preview.yml

@@ -26,7 +26,7 @@ jobs:
         configuration: [Release]
         platform: [x64]
     env:
-      SOLUTION_NAME:              'Files.slnx'
+      SOLUTION_NAME:              'Files.sln'
       CONFIGURATION:              '${{ matrix.configuration }}'
       PLATFORM:                   '${{ matrix.platform }}'
       APPX_BUNDLE_PLATFORMS:      'x64|arm64'

.github/workflows/cd-sideload-stable.yml

@@ -26,7 +26,7 @@ jobs:
         configuration: [Release]
         platform: [x64]
     env:
-      SOLUTION_NAME:              'Files.slnx'
+      SOLUTION_NAME:              'Files.sln'
       CONFIGURATION:              '${{ matrix.configuration }}'
       PLATFORM:                   '${{ matrix.platform }}'
       APPX_BUNDLE_PLATFORMS:      'x64|arm64'

.github/workflows/cd-store-preview.yml

@@ -25,7 +25,7 @@ jobs:
         configuration: [Release]
         platform: [x64]
     env:
-      SOLUTION_NAME:              'Files.slnx'
+      SOLUTION_NAME:              'Files.sln'
       CONFIGURATION:              '${{ matrix.configuration }}'
       PLATFORM:                   '${{ matrix.platform }}'
       APPX_BUNDLE_PLATFORMS:      'x64|arm64'

.github/workflows/cd-store-stable.yml

@@ -25,7 +25,7 @@ jobs:
         configuration: [Release]
         platform: [x64]
     env:
-      SOLUTION_NAME:              'Files.slnx'
+      SOLUTION_NAME:              'Files.sln'
       CONFIGURATION:              '${{ matrix.configuration }}'
       PLATFORM:                   '${{ matrix.platform }}'
       APPX_BUNDLE_PLATFORMS:      'x64|arm64'

.github/workflows/ci.yml

@@ -29,7 +29,7 @@ run-name: ${{ github.event_name == 'pull_request' && 'Files PR Validation' || 'F
 
 env:
   WORKING_DIR: ${{ github.workspace }} # Default: 'D:\a\Files\Files'
-  SOLUTION_PATH: '${{ github.workspace }}\Files.slnx'
+  SOLUTION_PATH: '${{ github.workspace }}\Files.sln'
   PACKAGE_PROJECT_DIR: '${{ github.workspace }}\src\Files.App (Package)'
   PACKAGE_PROJECT_PATH: '${{ github.workspace }}\src\Files.App (Package)\Files.Package.wapproj'
   AUTOMATED_TESTS_ARCHITECTURE: 'x64'