Fix VersionLoader to check local packages for all versions

Previously, VersionLoader only checked artifacts/local-packages for
versions containing 'current' in the name. Now it always checks the
local packages folder first for ANY version before falling back to
the global NuGet cache.

This enables the CI workflow to build packages with versions like
'1.0.0-preview08-pr4-3' and have them correctly resolved during tests.

Author: adamnova

Microsoft.Azure.Cosmos.Encryption.Custom/tests/Microsoft.Azure.Cosmos.Encryption.Custom.CompatibilityTests/SideBySide/VersionLoader.cs

@@ -80,37 +80,34 @@ public Type GetType(string fullTypeName)
 
         private static string GetPackagePath(string version)
         {
-            // For "current" versions (e.g., "1.0.0-current-*"), check local packages first
-            if (version.Contains("current", StringComparison.OrdinalIgnoreCase))
+            // First, always check local packages folder (for CI-built or locally-built packages)
+            string localPackagesPath = Path.GetFullPath(
+                Path.Combine(AppContext.BaseDirectory, "../../../../../artifacts/local-packages"));
+            
+            if (Directory.Exists(localPackagesPath))
             {
-                var localPackagesPath = Path.GetFullPath(
-                    Path.Combine(AppContext.BaseDirectory, "../../../../../artifacts/local-packages"));
-                
-                if (Directory.Exists(localPackagesPath))
-                {
-                    // Extract the version from NuGet package in local folder
-                    var packageFiles = Directory.GetFiles(localPackagesPath, $"Microsoft.Azure.Cosmos.Encryption.Custom.{version}.nupkg")
-                        .Where(f => !f.EndsWith(".symbols.nupkg"))
-                        .ToArray();
+                // Look for exact version match in local packages
+                string[] packageFiles = Directory.GetFiles(localPackagesPath, $"Microsoft.Azure.Cosmos.Encryption.Custom.{version}.nupkg")
+                    .Where(f => !f.EndsWith(".symbols.nupkg"))
+                    .ToArray();
 
-                    if (packageFiles.Length > 0)
+                if (packageFiles.Length > 0)
+                {
+                    // Extract the package to a temp location for loading
+                    string packageFile = packageFiles[0];
+                    string extractPath = Path.Combine(Path.GetTempPath(), "cosmos-compat-tests", Path.GetFileNameWithoutExtension(packageFile));
+                    
+                    if (!Directory.Exists(extractPath) || !File.Exists(Path.Combine(extractPath, "lib", "netstandard2.0", "Microsoft.Azure.Cosmos.Encryption.Custom.dll")))
                     {
-                        // Extract the package to a temp location for loading
-                        var packageFile = packageFiles[0];
-                        var extractPath = Path.Combine(Path.GetTempPath(), "cosmos-compat-tests", Path.GetFileNameWithoutExtension(packageFile));
-                        
-                        if (!Directory.Exists(extractPath) || !File.Exists(Path.Combine(extractPath, "lib", "netstandard2.0", "Microsoft.Azure.Cosmos.Encryption.Custom.dll")))
-                        {
-                            Directory.CreateDirectory(extractPath);
-                            System.IO.Compression.ZipFile.ExtractToDirectory(packageFile, extractPath, overwriteFiles: true);
-                        }
-
-                        return extractPath;
+                        Directory.CreateDirectory(extractPath);
+                        System.IO.Compression.ZipFile.ExtractToDirectory(packageFile, extractPath, overwriteFiles: true);
                     }
+
+                    return extractPath;
                 }
             }
 
-            // Default: use global NuGet packages folder
+            // Fallback: use global NuGet packages folder
             string globalPackagesPath = Environment.GetEnvironmentVariable("NUGET_PACKAGES");
 
             if (string.IsNullOrWhiteSpace(globalPackagesPath))
@@ -138,7 +135,7 @@ private static string FindAssemblyPath(string packagePath)
             string libDir = Path.Combine(packagePath, "lib");
             if (Directory.Exists(libDir))
             {
-                var dllPath = Directory.GetFiles(libDir, "Microsoft.Azure.Cosmos.Encryption.Custom.dll", SearchOption.AllDirectories)
+                string dllPath = Directory.GetFiles(libDir, "Microsoft.Azure.Cosmos.Encryption.Custom.dll", SearchOption.AllDirectories)
                     .FirstOrDefault();
                 if (dllPath != null)
                 {