Refactor site validation component

  * Use fullPath for consistency
  * Remove header validation feature flag

config/feature_flags/development/security_on_demand_scans_http_header_validation.yml

----
-name: security_on_demand_scans_http_header_validation
-introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/42812
-rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/276403
-milestone: '13.6'
-type: development
-group: group::dynamic analysis
-default_enabled: false

ee/app/assets/javascripts/security_configuration/dast_site_validation/components/dast_site_validation_modal.vue

@@ -11,12 +11,10 @@ import {
   GlSkeletonLoader,
   GlTruncate,
 } from '@gitlab/ui';
-import { omit } from 'lodash';
 import { __, s__ } from '~/locale';
 import * as Sentry from '~/sentry/wrapper';
 import ClipboardButton from '~/vue_shared/components/clipboard_button.vue';
 import download from '~/lib/utils/downloader';
-import glFeatureFlagsMixin from '~/vue_shared/mixins/gl_feature_flags_mixin';
 import { cleanLeadingSeparator, joinPaths, stripPathTail } from '~/lib/utils/url_utility';
 import {
   DAST_SITE_VALIDATION_MODAL_ID,
@@ -44,7 +42,6 @@ export default {
     GlSkeletonLoader,
     GlTruncate,
   },
-  mixins: [glFeatureFlagsMixin()],
   props: {
     fullPath: {
       type: String,
@@ -85,14 +82,7 @@ export default {
       };
     },
     validationMethodOptions() {
-      const isHttpHeaderValidationEnabled = this.glFeatures
-        .securityOnDemandScansHttpHeaderValidation;
-
-      const enabledValidationMethods = omit(DAST_SITE_VALIDATION_METHODS, [
-        !isHttpHeaderValidationEnabled ? DAST_SITE_VALIDATION_METHOD_HTTP_HEADER : '',
-      ]);
-
-      return Object.values(enabledValidationMethods);
+      return Object.values(DAST_SITE_VALIDATION_METHODS);
     },
     urlObject() {
       try {
@@ -187,7 +177,7 @@ export default {
         await this.$apollo.mutate({
           mutation: dastSiteValidationCreateMutation,
           variables: {
-            projectFullPath: this.fullPath,
+            fullPath: this.fullPath,
             dastSiteTokenId: this.tokenId,
             validationPath: this.validationPath,
             validationStrategy: this.validationMethod,

ee/app/assets/javascripts/security_configuration/dast_site_validation/graphql/dast_site_validation_create.mutation.graphql

 mutation dastSiteValidationCreate(
-  $projectFullPath: ID!
+  $fullPath: ID!
   $dastSiteTokenId: DastSiteTokenID!
   $validationPath: String!
   $validationStrategy: DastSiteValidationStrategyEnum
 ) {
   dastSiteValidationCreate(
     input: {
-      fullPath: $projectFullPath
+      fullPath: $fullPath
       dastSiteTokenId: $dastSiteTokenId
       validationPath: $validationPath
       strategy: $validationStrategy

ee/app/controllers/projects/security/dast_profiles_controller.rb

@@ -6,7 +6,6 @@ module Projects
       before_action do
         authorize_read_on_demand_scans!
         push_frontend_feature_flag(:security_on_demand_scans_site_validation, @project)
-        push_frontend_feature_flag(:security_on_demand_scans_http_header_validation, @project)
       end
 
       feature_category :dynamic_application_security_testing

ee/spec/frontend/security_configuration/dast_site_validation/components/dast_site_validation_modal_spec.js

@@ -51,9 +51,6 @@ describe('DastSiteValidationModal', () => {
         {},
         {
           propsData: defaultProps,
-          provide: {
-            glFeatures: { securityOnDemandScansHttpHeaderValidation: true },
-          },
           attrs: {
             static: true,
             visible: true,
@@ -287,22 +284,6 @@ describe('DastSiteValidationModal', () => {
     });
   });
 
-  describe('with the "securityOnDemandScansHttpHeaderValidation" feature flag disabled', () => {
-    beforeEach(() => {
-      createFullComponent({
-        provide: {
-          glFeatures: {
-            securityOnDemandScansHttpHeaderValidation: false,
-          },
-        },
-      });
-    });
-
-    it('does not render the http-header validation method', () => {
-      expect(findRadioInputForValidationMethod('header')).toBe(null);
-    });
-  });
-
   describe.each(validationMethods)('"%s" validation submission', validationMethod => {
     beforeEach(async () => {
       createFullComponent();
@@ -318,7 +299,7 @@ describe('DastSiteValidationModal', () => {
         findValidateButton().trigger('click');
 
         expect(requestHandlers.dastSiteValidationCreate).toHaveBeenCalledWith({
-          projectFullPath: fullPath,
+          fullPath,
           dastSiteTokenId: tokenId,
           validationPath: wrapper.vm.validationPath,
           validationStrategy: wrapper.vm.validationMethod,