Enhancement request: character replacement does not honor Emacs input methods

# Issue type

- Enhancement request

# Environment

Emacs version: 25.2.1
Operating System: Arch Linux with the latest updates
Evil version: evil git version
Evil installation type: Spacemacs installation
Graphical/Terminal: Graphical
Tested in a [clean environment]: Yes
# Reproduction steps
- Start Emacs
- Open a new file, `:e testfile` or C-x C-f testfile
- Change the language environment (Input method) to Arabic: C-\ and enter `arabic` in the mini-buffer, or `M-x` > `set-input-method` > `arabic` .
- Type some text:
اللغة العربيّة لغة جميلة
- Try to replace a single character: `r` and then press any character in the keyboard.

# Expected behavior
The replacing character should be in the language the input method is set to.

# Actual behavior
The replacing character appears in the current system keyboard layout and not in the Emacs input method.

# Further notes
The same behavior does not occur when pressing `R`.
The same behavior does occur when choosing different input methods other than Arabic.

Start by tracing the character-replacement command invoked by `r` and compare it with the `R` command, then inspect how each reads the replacement character under an active Emacs input method. Reproduce the Arabic case and other non-Arabic methods from the issue; done means `r` honors the selected input method without breaking ordinary replacement behavior.

Written by the indexing model from the issue text.