fix(links): preserve percent-encoded URLs during normalization (#18792)

## Summary

This preserves percent-encoded payloads when normalizing links fields.

`lowercaseUrlOriginAndRemoveTrailingSlash` was decoding the path and
query string while lowercasing the URL origin. That changes URLs where
encoded payloads are semantically significant, such as Google Maps links
containing `%2F` segments.

Closes #18698.

## Changes

- stop decoding the path/query payload in
`lowercaseUrlOriginAndRemoveTrailingSlash`
- preserve the raw path, query, and hash while still lowercasing the
origin and trimming a trailing slash
- update shared URL normalization tests to assert encoded payloads stay
encoded
- add a server-side regression test covering imported links field
normalization

## Validation

- `corepack yarn jest --config packages/twenty-shared/jest.config.mjs
packages/twenty-shared/src/utils/url/__tests__/lowercaseUrlOriginAndRemoveTrailingSlash.test.ts
--runInBand`
- `corepack yarn jest --config packages/twenty-server/jest.config.mjs
packages/twenty-server/src/engine/core-modules/record-transformer/utils/__tests__/transform-links-value.util.spec.ts
--runInBand`
- `corepack yarn nx test twenty-server --runInBand
--testFile=src/engine/core-modules/record-transformer/utils/__tests__/transform-links-value.util.spec.ts`

---------

Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-server/src/engine/metadata-modules/webhook/jobs/call-webhook.job.ts

@@ -1,6 +1,6 @@
 import crypto from 'crypto';
 
-import { getAbsoluteUrl } from 'twenty-shared/utils';
+import { ensureAbsoluteUrl } from 'twenty-shared/utils';
 
 import { AuditService } from 'src/engine/core-modules/audit/services/audit.service';
 import { WEBHOOK_RESPONSE_EVENT } from 'src/engine/core-modules/audit/utils/events/workspace-event/webhook/webhook-response';
@@ -79,7 +79,7 @@ export class CallWebhookJob {
       );
 
       const response = await axiosClient.post(
-        getAbsoluteUrl(data.targetUrl),
+        ensureAbsoluteUrl(data.targetUrl),
         payloadWithoutSecret,
         {
           headers,