fixed state restoring on feedback window reopen

[nlchar]

This PR fixes #100897
Possible solution that I proposed in the issue
The code responsible for the feature is located in the file. The updateCharCountText function does the job of updating the counter & the 'Tweet' button state, so its call in the window reopen function may be sufficient to resolve the issue. I think the show function is called on window reopen, so it may be used for that purpose.

The solution seems to work correct.
Tests I ran:

Test 1. Close window by tapping the cross icon

1. Open the 'Tweet Feedback' window.
2. Choose the sad smiley. The character counter now equals to 270. The Tweet button is inactive.
3. Type 'hello' in the text box. The character counter now equals to 265. The Tweet button is active.
4. Close the window by tapping the cross icon at the top of the window.
5. Open the 'Tweet Feedback' window again.
6. The character counter is restored and equals to 265. The Tweet button is restored and is active.
   Correct!
   

Test 2. Close window by pressing ESC key

1. Open the 'Tweet Feedback' window.
2. Choose the happy smiley. The character counter now equals to 257. The Tweet button is inactive.
3. Type 'hello' in the text box. The character counter now equals to 252. The Tweet button is active.
4. Close the window by pressing the ESC key.
5. Open the 'Tweet Feedback' window again.
6. The character counter is restored and equals to 252. The Tweet button is restored and is active.
   Correct!
   

Test 3. Choosing another smiley after window reopen.

1. Open the 'Tweet Feedback' window.
2. Choose the sad smiley. The character counter now equals to 270. The Tweet button is inactive.
3. Type 'hello' in the text box. The character counter now equals to 265. The Tweet button is active.
4. Close the window by tapping the cross icon at the top of the window.
5. Open the 'Tweet Feedback' window again.
6. The character counter is restored and equals to 265. The Tweet button is restored and is active.
7. Now choose the happy smiley. The character counter now equals to 252 and the Tweet button is still active.
   Correct!
   

Test 4. Window reopen with no text box contents.

1. Open the 'Tweet Feedback' window.
2. Choose the happy smiley. The character counter now equals to 257. The Tweet button is inactive.
3. Type 'hello' in the text box. The character counter now equals to 252. The Tweet button is active.
4. Close the window by pressing the ESC key.
5. Open the 'Tweet Feedback' window again.
6. The character counter is restored and equals to 252. The Tweet button is restored and is active.
7. Now remove the input in the text box. The counter is equal to 257 and the Tweet button is inactive.
8. Close the window by pressing the ESC key.
9. Open the 'Tweet Feedback' window again.
10. The character counter is restored and equals to 257. The Tweet button is restored and is not active.
    

[bpasero]

Thanks