fix(e2e): increase Keycloak login timeout to 30 seconds

The default 10-second actionTimeout was being exceeded when the
Keycloak popup was slow to render, causing orchestrator RBAC tests
to fail during authentication setup.

Add explicit waitFor with 30-second timeout before interacting with
the Keycloak login form to handle slow responses.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: chadcrum

e2e-tests/playwright/utils/common.ts

@@ -84,6 +84,10 @@ export class Common {
     await new Promise<void>((resolve) => {
       this.page.once("popup", async (popup) => {
         await popup.waitForLoadState();
+        // Wait for login button to be visible with longer timeout for slow Keycloak responses
+        await popup
+          .locator("#kc-login")
+          .waitFor({ state: "visible", timeout: 30000 });
         await popup.locator("#username").fill(userid);
         await popup.locator("#password").fill(password);
         await popup.locator("#kc-login").click();