[IMP] web: Allow to hide the currency symbol on FieldMonetary widget

In some cases, we want to use the regular FieldMonetary widget (performing the amount rounding correctly) but without displaying the currency symbol since the currency code is displayed elsewhere.
This is needed because some currencies are using the same currency symbol like USD / MXN.

Task: 2555114
Part-of: odoo/odoo#91448

addons/web/static/src/legacy/js/fields/basic_fields.js

@@ -1258,7 +1258,7 @@ var FieldMonetary = NumericField.extend({
         // Prepare and add the input
         var def = this._prepareInput(this.$input).appendTo(this.$el);
 
-        if (this.currency) {
+        if (this.currency && !this.nodeOptions.no_symbol) {
             // Prepare and add the currency symbol
             var $currencySymbol = $('<span>', {text: this.currency.symbol});
             if (this.currency.position === "after") {

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

@@ -5782,6 +5782,33 @@ QUnit.module('basic_fields', {
         form.destroy();
     });
 
+    QUnit.test('monetary field without currency symbol', async function (assert) {
+        assert.expect(1);
+
+        var form = await createView({
+            View: FormView,
+            model: 'partner',
+            data: this.data,
+            arch:'<form string="Partners">' +
+                    '<sheet>' +
+                        '<field name="qux" widget="monetary" options="{\'no_symbol\': True}"/>' +
+                        '<field name="currency_id" invisible="1"/>' +
+                    '</sheet>' +
+                '</form>',
+            res_id: 5,
+            session: {
+                currencies: _.indexBy(this.data.currency.records, 'id'),
+            },
+        });
+
+        await testUtils.form.clickEdit(form);
+
+        // Non-breaking space between the currency and the amount
+        assert.strictEqual(form.$('.o_field_widget[name=qux] input').val(), "9.10", "The currency symbol is not displayed");
+
+        form.destroy();
+    });
+
     QUnit.test('monetary field in editable list view', async function (assert) {
         assert.expect(9);