test(flex-layout): correct column layout assertion for modern Safari versions

Since Safari 16, the result of setting `flex: 1 1 auto` via style properties is `flex: 1 1 0px;`.

Author: LayZeeDK

projects/libs/flex-layout/flex/flex/flex.spec.ts

@@ -27,6 +27,12 @@ import {
   FlexStyleBuilder,
 } from '@ngbracket/ngx-layout/flex';
 
+function getSafariMajorVersion(): number {
+  const ua = navigator.userAgent;
+  const match = /Version\/(\d+)/.exec(ua);
+  return match ? Number.parseInt(match[1], 10) : 0;
+}
+
 describe('flex directive', () => {
   let fixture: ComponentFixture<any>;
   let mediaController: MockMatchMedia;
@@ -424,15 +430,15 @@ describe('flex directive', () => {
           },
           styler
         );
-      } else if (platform.FIREFOX || platform.WEBKIT || platform.IOS) {
+      } else if (platform.FIREFOX) {
         expectEl(element).toHaveInlineStyle(
           {
             flex: '1 1 1e-9px',
             'box-sizing': 'border-box',
           },
           styler
         );
-      } else if (platform.EDGE) {
+      } else if (platform.EDGE || platform.WEBKIT || platform.IOS) {
         expectEl(element).toHaveInlineStyle(
           {
             flex: '1 1 0px',