[MOV] web: rename colorpicker_dialog.xml file

The ColorpickerDialog will become a widget, this commit is only about
renaming the related XML file.

Part of https://github.com/odoo/odoo/pull/46088
task-2195313

addons/web/static/src/js/widgets/colorpicker.js

@@ -9,7 +9,7 @@ var _t = core._t;
 
 var ColorpickerDialog = Dialog.extend({
     xmlDependencies: (Dialog.prototype.xmlDependencies || [])
-        .concat(['/web/static/src/xml/colorpicker_dialog.xml']),
+        .concat(['/web/static/src/xml/colorpicker.xml']),
     template: 'ColorpickerDialog',
     events: _.extend({}, Dialog.prototype.events || {}, {
         'mousedown .o_color_pick_area': '_onMouseDownPicker',

addons/web/static/tests/fields/basic_fields_tests.js

@@ -7259,7 +7259,7 @@ QUnit.module('basic_fields', {
 
     QUnit.module('FieldColor', {
         before: function () {
-            return ajax.loadXML('/web/static/src/xml/colorpicker_dialog.xml', core.qweb);
+            return ajax.loadXML('/web/static/src/xml/colorpicker.xml', core.qweb);
         },
     });