[MM-61570]: Refactored the post priority menu and fixed the keyboard navigation issue in the menu. (#29583)

* [MA-7]: Refactored the post priority menu and fixed the keyboard navigation issue in the menu

* [MA-7]: Updated the menu list structure and fixed menu not closing bug

* [MA-7]: Review fixes minor code structure fixes

* [MA-7]: Fixed failing e2e test cases

* [MA-7]: Fixed styling and Keyboard behaviour of menu

* [MA-7]: Minor changes after rebased with master

* [MA-7]: Fixed failing playwright test case

* [MA-7]: Fixed failing e2e test cases

* [MA-7]: Fixed reverting of selected priority to previous value on menu close

* [MA-7]: Fixed failing smoke test

* [MA-7]: Fixed submenu pointer event and failing playwright test cases

* [MA-7]: Fixed failing playwright test case

* fix playwright tests

* fix playwright tests

---------

Co-authored-by: yasserfaraazkhan <attitude3cena.yf@gmail.com>

e2e-tests/playwright/tests/accessibility/channels/intro_channel.spec.ts

@@ -42,25 +42,21 @@ test('Post actions tab support', async ({pw, axe}) => {
     await post.postMenu.toBeVisible();
 
     // # Open the dot menu
-    await post.postMenu.dotMenuButton.click();
+    await post.postMenu.dotMenuButton.press('Enter');
 
     // * Dot menu should be visible and have focused
     await channelsPage.postDotMenu.toBeVisible();
-    await expect(channelsPage.postDotMenu.container).toBeFocused();
+    await expect(channelsPage.postDotMenu.replyMenuItem).toBeFocused();
 
     // # Analyze the page
     const accessibilityScanResults = await axe
         .builder(page, {disableColorContrast: true})
-        .include('.MuiMenu-list')
+        .include('.MuiList-root.MuiList-padding')
         .analyze();
 
     // * Should have no violation
     expect(accessibilityScanResults.violations).toHaveLength(0);
 
-    // * Should move focus to Reply after arrow down
-    await channelsPage.postDotMenu.container.press('ArrowDown');
-    await expect(channelsPage.postDotMenu.replyMenuItem).toBeFocused();
-
     // * Should move focus to Forward after arrow down
     await channelsPage.postDotMenu.replyMenuItem.press('ArrowDown');
     await expect(channelsPage.postDotMenu.forwardMenuItem).toBeFocused();