Skip auto-update on unsupported Windows architectures (#4298)

While PowerShell now works on ARM64 Windows, it does not yet have an MSI
installer, so for now instead of erroneously attempting to install the
x64 version, we just recommend that the user update (like we do for
Linux). Note that the string is now capitalized due to a server-side
change that simply returns .NET's
`System.Runtime.InteropServices.Architecture` enum as a string.

Author: andyleejordan

src/features/UpdatePowerShell.ts

@@ -15,7 +15,7 @@ import { LanguageClient } from "vscode-languageclient/node";
 import { Logger } from "../logging";
 import { SessionManager } from "../session";
 import { changeSetting } from "../settings";
-import { isMacOS, isWindows } from "../utils";
+import { isLinux, isMacOS, isWindows } from "../utils";
 import { EvaluateRequestType } from "./Console";
 
 const streamPipeline = util.promisify(stream.pipeline);
@@ -113,7 +113,8 @@ export async function InvokePowerShellUpdateCheck(
     }). The current latest release is ${release.version.raw
     }.`;
 
-    if (process.platform === "linux") {
+    // Cannot auto-install for Linux or Windows that isn't x86 or x64.
+    if (isLinux || (isWindows && (arch !== "X86" && arch !== "X64"))) {
         void logger.writeAndShowInformation(`${commonText} We recommend updating to the latest version.`);
         return;
     }
@@ -134,7 +135,7 @@ export async function InvokePowerShellUpdateCheck(
     // Yes choice.
     case 0:
         if (isWindows) {
-            const msiMatcher = arch === "x86" ?
+            const msiMatcher = arch === "X86" ?
                 "win-x86.msi" : "win-x64.msi";
 
             // eslint-disable-next-line @typescript-eslint/no-explicit-any