[9.1] [Interactive setup] Removed default port from cluster address form (#230582) (#231308)

# Backport

This will backport the following commits from `main` to `9.1`:
- [[Interactive setup] Removed default port from cluster address form
(#230582)](#230582)

<!--- Backport version: 9.6.6 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sorenlouv/backport)

<!--BACKPORT [{"author":{"name":"Elena
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setup] Removed default port from cluster address form (#230582)\n\n##
Summary\n\nRemoved default port from interactive setup cluster address
form, unless\nit is specified by the user.\n\n### Checklist\n\n- [x]
[Unit or
functional\ntests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)\nwere
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description includes the appropriate Release Notes section,\nand the
correct `release_note:*` label is applied per
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form, unless\nit is specified by the user.\n\n### Checklist\n\n- [x]
[Unit or
functional\ntests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)\nwere
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form, unless\nit is specified by the user.\n\n### Checklist\n\n- [x]
[Unit or
functional\ntests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)\nwere
updated or added to match the most common scenarios\n- [x] The PR
description includes the appropriate Release Notes section,\nand the
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Co-authored-by: Elena Shostak <165678770+elena-shostak@users.noreply.github.com>

Author: kibanamachine

src/platform/plugins/private/interactive_setup/public/cluster_address_form.test.tsx

@@ -41,7 +41,7 @@ describe('ClusterAddressForm', () => {
     await waitFor(() => {
       expect(coreStart.http.post).toHaveBeenLastCalledWith('/internal/interactive_setup/ping', {
         body: JSON.stringify({
-          host: 'https://localhost:9200',
+          host: 'https://localhost',
         }),
       });
       expect(onSuccess).toHaveBeenCalled();

src/platform/plugins/private/interactive_setup/public/cluster_address_form.tsx

@@ -74,13 +74,12 @@ export const ClusterAddressForm: FunctionComponent<ClusterAddressFormProps> = ({
     },
     onSubmit: async (values) => {
       const url = new URL(values.host);
-      const host = `${url.protocol}//${url.hostname}:${url.port || 9200}`;
 
       const result = await http.post<PingResult>('/internal/interactive_setup/ping', {
-        body: JSON.stringify({ host }),
+        body: JSON.stringify({ host: url.origin }),
       });
 
-      onSuccess?.(result, { host });
+      onSuccess?.(result, { host: url.origin });
     },
   });