Architecture validation for JDK file installs (#1324)

* Enhance architecture validation and error handling

* Improve architecture normalization and validation for custom tokens

* Refactor architecture validation to consolidate error handling for invalid tokens

src/distributions/platform-types.ts

@@ -192,6 +192,9 @@ const CANONICAL_ARCHITECTURES: readonly JavaArchitecture[] = [
   's390x'
 ];
 
+// Used in environment-variable names and tool-cache paths.
+const ARCHITECTURE_TOKEN = /^[A-Za-z0-9][A-Za-z0-9_-]*$/;
+
 const PLATFORM_ALIASES: Readonly<
   Partial<Record<NodeJS.Platform, JavaPlatform>>
 > = {
@@ -204,14 +207,27 @@ const PLATFORM_ALIASES: Readonly<
 export function normalizeArchitecture(architecture: string): string {
   const trimmedArchitecture = architecture.trim();
   const normalizedArchitecture = trimmedArchitecture.toLowerCase();
-  return (
-    ARCHITECTURE_ALIASES[normalizedArchitecture] ??
+  const alias = Object.prototype.hasOwnProperty.call(
+    ARCHITECTURE_ALIASES,
+    normalizedArchitecture
+  )
+    ? ARCHITECTURE_ALIASES[normalizedArchitecture]
+    : undefined;
+  const result =
+    alias ??
     (CANONICAL_ARCHITECTURES.includes(
       normalizedArchitecture as JavaArchitecture
     )
       ? normalizedArchitecture
-      : trimmedArchitecture)
-  );
+      : trimmedArchitecture);
+
+  if (!ARCHITECTURE_TOKEN.test(result)) {
+    throw new Error(
+      `Unsupported architecture value: ${JSON.stringify(architecture)}`
+    );
+  }
+
+  return result;
 }
 
 export function normalizePlatform(