Disabled http2 FTR configs for saml and oidc (elastic#187462)

## Summary

Since initial tests were flaky only for http2 configuration, disabled
its FTR configs for saml and oidc (see
elastic#186780,
elastic#186780).
Unskiped the original test.

### Checklist

- [x] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios

---------

Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>

.buildkite/ftr_configs.yml

@@ -91,6 +91,10 @@ disabled:
   - x-pack/test_serverless/api_integration/test_suites/security/config.feature_flags.ts
   - x-pack/test_serverless/functional/test_suites/security/config.feature_flags.ts
 
+  # http/2 security muted tests
+  - x-pack/test/security_functional/saml.http2.config.ts
+  - x-pack/test/security_functional/oidc.http2.config.ts
+
 defaultQueue: 'n2-4-spot'
 enabled:
   - test/accessibility/config.ts
@@ -401,8 +405,6 @@ enabled:
   - x-pack/test/security_functional/login_selector.config.ts
   - x-pack/test/security_functional/oidc.config.ts
   - x-pack/test/security_functional/saml.config.ts
-  - x-pack/test/security_functional/saml.http2.config.ts
-  - x-pack/test/security_functional/oidc.http2.config.ts
   - x-pack/test/security_functional/insecure_cluster_warning.config.ts
   - x-pack/test/security_functional/user_profiles.config.ts
   - x-pack/test/security_functional/expired_session.config.ts

x-pack/test/security_functional/tests/oidc/url_capture.ts

@@ -16,8 +16,7 @@ export default function ({ getService, getPageObjects }: FtrProviderContext) {
   const testSubjects = getService('testSubjects');
   const PageObjects = getPageObjects(['common']);
 
-  // Failing: See https://github.com/elastic/kibana/issues/186780
-  describe.skip('URL capture', function () {
+  describe('URL capture', function () {
     this.tags('includeFirefox');
 
     before(async () => {

x-pack/test/security_functional/tests/saml/url_capture.ts

@@ -16,8 +16,7 @@ export default function ({ getService, getPageObjects }: FtrProviderContext) {
   const testSubjects = getService('testSubjects');
   const PageObjects = getPageObjects(['common']);
 
-  // Failing: See https://github.com/elastic/kibana/issues/186675
-  describe.skip('URL capture', function () {
+  describe('URL capture', function () {
     this.tags('includeFirefox');
 
     before(async () => {