[FIX] website: adapt browser URL on "edit translations" mode

Steps to reproduce:

- Go to a website page > Add a 'Form' block.
- Go to the page (in 'edit_translations' mode) > Reload the page > The
form won't be pre-filled with default values. [1]

The page reloading with `?edit_translations=1` leads to a misleading
situation where the form block is handled as on 'edit_translations'
mode (see: `data-edit_translations="1"` on the DOM) hence the behaviour
in [1].

The goal of this commit is to prevent this inconsistency by simply
adapting the browser URL once "edit_translations" mode is activated.

closes odoo/odoo#124889

X-original-commit: 8c7d096a09fe23ac7ef9b7bf54123592c52122dd
Signed-off-by: Colin Louis (loco) <loco@odoo.com>

addons/website/static/src/components/translator/translator.js

@@ -119,9 +119,7 @@ export class WebsiteTranslator extends WebsiteEditorComponent {
             this.websiteContext.translation = false;
         } else {
             this.state.showWysiwyg = true;
-            const url = new URL(this.websiteService.contentWindow.location.href);
-            url.searchParams.delete('edit_translations');
-            this.websiteService.contentWindow.history.replaceState(this.websiteService.contentWindow.history.state, null, url);
+            this.deleteQueryParam("edit_translations", this.websiteService.contentWindow, true);
         }
     }
 
@@ -345,4 +343,13 @@ export class WebsiteTranslator extends WebsiteEditorComponent {
     _onSave(ev) {
         ev.stopPropagation();
     }
+
+    deleteQueryParam(param, target = window, adaptBrowserUrl = false) {
+        const url = new URL(target.location.href);
+        url.searchParams.delete(param);
+        target.history.replaceState(target.history.state, null, url);
+        if (adaptBrowserUrl) {
+            this.deleteQueryParam(param);
+        }
+    }
 }