Manually activate shadow env instead of depending on extension

src/ruby.ts

@@ -111,27 +111,24 @@ export class Ruby {
   }
 
   private async activateShadowenv() {
-    const extension = vscode.extensions.getExtension(
-      "shopify.vscode-shadowenv"
-    );
-
-    if (!extension) {
-      throw new Error(
-        "The Ruby LSP version manager is configured to be shadowenv, but the shadowenv extension is not installed"
-      );
-    }
-
     if (!fs.existsSync(path.join(this.workingFolder, ".shadowenv.d"))) {
       throw new Error(
         "The Ruby LSP version manager is configured to be shadowenv, \
         but no .shadowenv.d directory was found in the workspace"
       );
     }
 
-    await extension.activate();
-    await this.delay(500);
+    const result = await asyncExec("shadowenv hook --json", {
+      cwd: this.workingFolder,
+    });
+
+    const env = JSON.parse(result.stdout).exported;
+
+    // The only reason we set the process environment here is to allow other extensions that don't perform activation
+    // work properly
     // eslint-disable-next-line no-process-env
-    this._env = { ...process.env };
+    process.env = env;
+    this._env = env;
   }
 
   private async activateChruby() {
@@ -297,12 +294,6 @@ export class Ruby {
     }
   }
 
-  private async delay(mseconds: number) {
-    return new Promise((resolve) => {
-      setTimeout(resolve, mseconds);
-    });
-  }
-
   private async activateCustomRuby() {
     const configuration = vscode.workspace.getConfiguration("rubyLsp");
     const customCommand: string | undefined =