Address PR review feedback for OIDC sign-in pages

- Remove inline password form from SignInPage (use PasswordSignInPage)
- Extract Divider and OIDCButtons to _components folder
- Move OIDC providers into page queries instead of lazy-loaded queries
- Create useSafeContinueUrl hook for trust app using getPathPrefix
- Use safeContinueUrl.toString() for continue URL parameter
- Fix wg.Go style in IAM service Run method

Signed-off-by: Bryan Frimin <bryan@getprobo.com>

apps/trust/src/hooks/useSafeContinueUrl.ts

@@ -0,0 +1,36 @@
+import { useMemo } from "react";
+import { useSearchParams } from "react-router";
+
+import { getPathPrefix } from "#/utils/pathPrefix";
+
+export function useSafeContinueUrl(): URL {
+  const [searchParams] = useSearchParams();
+
+  const continueUrlParam = searchParams.get("continue");
+  const prefix = getPathPrefix();
+  const fallback = window.location.origin + (prefix || "/");
+
+  const safeContinueUrl = useMemo(() => {
+    if (continueUrlParam) {
+      let continueUrl: URL;
+      try {
+        continueUrl = new URL(continueUrlParam, window.location.origin);
+      } catch {
+        return new URL(fallback, window.location.origin);
+      }
+      if (
+        continueUrl.origin === window.location.origin
+        && continueUrl.pathname.startsWith(`${prefix}/`)
+      ) {
+        return new URL(
+          continueUrl.pathname + continueUrl.search,
+          window.location.origin,
+        );
+      }
+      return new URL(fallback, window.location.origin);
+    }
+    return new URL(fallback, window.location.origin);
+  }, [continueUrlParam, fallback, prefix]);
+
+  return safeContinueUrl;
+}