[FIX] web: 'image_small' field not displayed for non-latin translations

Before this commit, images in kanban view of the Contact app were not displayed
on non-latin languages, such as Russian.

This was caused by the is_bin_size helper that wrongly assumes that a certain
string is not a binary size, although it is (e.g. 64.2 Кб).

This commit fixes the issue by including such strings as valid binary sizes.

Bug found and fixed by @true-datura
Test by @alexkuhn

closes #23526
closes #22519

addons/web/static/src/js/core/utils.js

@@ -228,7 +228,7 @@ var utils = {
      * @returns {boolean}
      */
     is_bin_size: function (v) {
-        return (/^\d+(\.\d*)? \w+$/).test(v);
+        return (/^\d+(\.\d*)? [^0-9]+$/).test(v);
     },
     /**
      * @param {any} node

addons/web/static/tests/core/util_tests.js

@@ -44,6 +44,17 @@ QUnit.module('core', {}, function () {
         assert.strictEqual(intersperse("12345678", [3,0], '.'), '12.345.678');
     });
 
+    QUnit.test('is_bin_size', function (assert) {
+        assert.expect(3);
+
+        var is_bin_size = utils.is_bin_size;
+
+        assert.strictEqual(is_bin_size('Cg=='), false);
+        assert.strictEqual(is_bin_size('2.5 Mb'), true);
+        // should also work for non-latin languages (e.g. russian)
+        assert.strictEqual(is_bin_size('64.2 Кб'), true);
+    });
+
 });
 
 });