fix(translations): correct Russian translations for UI states in general section (#14953)

fix(translations): correct Russian translations for UI states in general
section

## What?

This PR corrects two Russian translations in the general section of the
Russian language file (`ru.ts`):

1. **`submitting`**: Changed from `'Подача заявления...'` to
`'Отправка...'`
2. **`success`**: Changed from `'Успех'` to `'Успешно'`

## Why?

### For `submitting`:
The previous translation `'Подача заявления...'` is too
application-specific - it implies submitting an official application
(like a tax form or job application). However, this key is used for any
form submission process throughout the UI, not just application forms.
The new translation `'Отправка...'` better reflects the generic nature
of the key.

### For `success`:
The previous translation `'Успех'` is a noun meaning "success" as a
concept. In the context of UI states, an adverbial form is more
appropriate for indicating the successful completion of an action.
`'Успешно'` (meaning "successfully" or "completed successfully") better
fits this context.

## How?

Modified the Russian translation file at
`packages/translations/src/languages/ru.ts`:
- Updated line for `submitting` key in the `general` object
- Updated line for `success` key in the `general` object

**Code diff:**
```diff
-    submitting: 'Подача заявления...',
+    submitting: 'Отправка...',
-    success: 'Успех',
+    success: 'Успешно',

Author: spiner2000

packages/translations/src/languages/ru.ts

@@ -418,8 +418,8 @@ export const ruTranslations: DefaultTranslationsObject = {
     stayOnThisPage: 'Остаться на этой странице',
     submissionSuccessful: 'Успешно отправлено.',
     submit: 'Отправить',
-    submitting: 'Подача заявления...',
-    success: 'Успех',
+    submitting: 'Отправка...',
+    success: 'Успешно',
     successfullyCreated: '{{label}} успешно создан.',
     successfullyDuplicated: '{{label}} успешно продублирован.',
     successfullyReindexed: