Update Search for: <keyword-value> when user hits Ctrl+h with exisiting Replace dialog already open

[Keyikedalube]

Suppose we have a lengthy C code and want to refactor existing variable names:

...
    int x_value, y_value;
...

1. Double click x_value and press Ctrl+h
2. Resize dialog opens with x_value set as Search for: keyword value
3. Leave the dialog open
4. Now double click y_value to highlight it and press Ctrl+h
5. Resize dialog is brought back to focus but the Search for: keyword isn't updated

I'd like step 5 to update the keyword value with new highlighted value from the editor.

The reason I leave the dialog open is because I want to keep track of the recent keyword that I just replaced without having to undo and redo again when I forget the last changes made to the document.

[elextr]

The search dialog was updated to do this in #2697 (after much discussion on that and other issues/PRs) so having replace work the same should be fine if somebody wants to do it.

[erickpaquin]

@Keyikedalube , @elextr Can this change be closed?

[elextr]

Yeah, I didn't notice that #2697 did the replace dialog as well.