Cariage return (^M) in output of delta pager makes line disappear from diff

**Describe the bug**
Having carriage return in the output of diff pager makes lazygit erase line when displaying diff
To be specific, I am using `delta` as pager

**To Reproduce**

```yaml
# ~/.config/jesseduffield/lazygit/config.yml
git:
paging:
colorArg: always
pager: delta --dark --paging=never
```

```
~/git> mkdir test && cd test && git init
Initialised empty Git repository in /home/kolia/git/test/.git/
~/git/test> echo "some text" > file.txt
~/git/test> git add file.txt
~/git/test> git commit -m "first commit"
[master (root-commit) 93b4ee7] first commit
1 file changed, 1 insertion(+)
create mode 100644 file.txt
~/git/test> echo -e "modified text\r" > file.txt
~/git/test> lazygit
```

**Actual behavior**
modified line is displayed as empty line

**Expected behavior**
display the content of modified line

**Screenshots**

output from pager is not displaying content of modified line


when staging / unstaging individual lines, no pager involved, the modified line is displayed properly


notice, the pager `delta`, when used outside `lazygit`, displays carriage return as ^M at the end of line:


**Desktop (please complete the following information):**
- OS: kubutu 20.04
- Lazygit Version: current master at 4744b3