Thread reply edit file handling bug fix (#30470)

* Fixed a bug where escape would delete all typed content

* Fixed rootId and postID

* fixed tests

* Type fix

* Fixed a test

* Search result edit fix

* Removed a test change

* threads view isn't RHS

* Fixed a cypress test

* Fixed a cypress test

* Fixed a flaky playwighr test

e2e-tests/cypress/tests/integration/channels/keyboard_shortcuts/up_arrow_edit_message_spec.js

@@ -302,7 +302,10 @@ describe('Keyboard Shortcuts', () => {
         cy.uiGetPostTextBox().type('{uparrow}');
 
         // # Add some text to the previous message and save
-        cy.get('#edit_textbox').type('Test').type('{enter}');
+        // cy.get('#edit_textbox').type('Test').type('{enter}');
+        cy.get('#edit_textbox').type('Test');
+        cy.wait(TIMEOUTS.ONE_SEC);
+        cy.get('#edit_textbox').type('{enter}');
         cy.wait(TIMEOUTS.ONE_SEC);
 
         cy.getLastPost().within(() => {

e2e-tests/cypress/tests/integration/channels/messaging/center_channel_rhs_overlap_spec.js

@@ -732,7 +732,7 @@ describe('Messaging', () => {
             cy.get('#edit_textbox').should('be.visible');
 
             // * Update the post message and type ENTER
-            cy.get('#edit_textbox', {timeout: TIMEOUTS.FIVE_SEC}).invoke('val', '').type(message2).type('{enter}').wait(TIMEOUTS.HALF_SEC);
+            cy.get('#edit_textbox', {timeout: TIMEOUTS.FIVE_SEC}).invoke('val', '').type(message2).wait(TIMEOUTS.HALF_SEC).type('{enter}').wait(TIMEOUTS.HALF_SEC);
 
             // * Post appears in RHS search results, displays Pinned badge
             cy.get(`#searchResult_${postId}`).findByText('Edited').should('exist');

e2e-tests/playwright/support/ui/components/channels/post_create.ts

@@ -3,6 +3,7 @@
 
 import {expect, Locator} from '@playwright/test';
 import path from 'node:path';
+import {waitUntil} from '@e2e-support/test_action';
 
 export default class ChannelsPostCreate {
     readonly container: Locator;
@@ -106,6 +107,12 @@ export default class ChannelsPostCreate {
             });
 
             await this.attachmentButton.click();
+
+            // wait for all files to be uploaded
+            await waitUntil(async () => {
+                const attachment = await this.container.locator('.file-preview').count();
+                return attachment === files.length;
+            });
         }
 
         await this.sendMessage();