extension/src/config.ts: handle the version with '-dev' as prerelease

And change the version string in package.json on master to v0.44.0-dev
to indicate it is the dev version for v0.44.0.
Prerelease versions will use v0.43.X.

While doing so, I learned that the version string must have
Major.Minor.Patch[-prerelease] format, and strings like "v0.44-dev"
are not acceptable. Otherwise, `vsce` and vscode
test framework fails to build the extension quite mysteriously.

Change-Id: I6e73b2bf6d0f41b491844345193064320dd401e3
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/615775
Commit-Queue: Hyang-Ah Hana Kim <[email protected]>
Reviewed-by: Hongxiang Jiang <[email protected]>
kokoro-CI: kokoro <[email protected]>

Author: hyangah

CHANGELOG.md

@@ -5,6 +5,11 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/).
 
 ## Unreleased
 
+### Code Health
+
+* Extension build target is set to `es2022`. ([Issue 3540](https://github.com/golang/vscode-go/issues/3540))
+* The extension release workflow is migrated to the Go project's [Relui](https://pkg.go.dev/golang.org/x/build/cmd/relui#section-readme). ([Issue 3500](https://github.com/golang/vscode-go/issues/3500))
+
 ## v0.42.1
 
 Date: 9 Sep, 2024

extension/package-lock.json

@@ -1,7 +1,7 @@
 {
   "name": "go",
   "displayName": "Go",
-  "version": "0.43.0-dev",
+  "version": "0.44.0-dev",
   "publisher": "golang",
   "description": "Rich Go language support for Visual Studio Code",
   "author": {

extension/package.json

@@ -46,8 +46,11 @@ export class ExtensionInfo {
 		this.version = version?.format();
 		this.appName = vscode.env.appName;
 
-		// golang.go prerelease: minor version is an odd number.
-		this.isPreview = !!(extensionId === 'golang.go' && version && version.minor % 2 === 1);
+		// golang.go prerelease: minor version is an odd number, or has the "-dev" suffix.
+		this.isPreview =
+			extensionId === 'golang.go' && !!version
+				? version.minor % 2 === 1 || version.toString().endsWith('-dev')
+				: false;
 		this.isInCloudIDE =
 			process.env.CLOUD_SHELL === 'true' ||
 			process.env.MONOSPACE_ENV === 'true' ||