ALE + Rust-Analyser: Malformed buffer when error / warning is displayed within a split...

## Information

**VIM version**

`MacVim r178 (Vim 9.0.1897)`

Operating System: macos ventura `(13.5.2 (22G91))`

## What went wrong

buffers / panels with errors / warnings get mangled such that the gutter displays repeated `@` symbols, the source code is hidden, and line numbers are not available. see https://github.com/rust-lang/rust-analyzer/issues/15726 for a screenshot.

edit: here's a video:

https://github.com/dense-analysis/ale/assets/367674/1999a89c-f846-49b4-b472-3932b4d0f4a5

seems to only happen when the split is sized to a specific column width (exactly the source code's line length?) - anything above or below does not trigger the issue. likewise, if i address the warning or ignore it via `#[allow(dead_code)]`, the issue goes away.

## Reproducing the bug

1. launch MacVim
2. open a `rust` file via `:edit path/to/file.rs`
3. split the panel with `:vsplit`
4. open a different `rust` file which has warnings / errors - e.g. "unused method" via: `:edit path/to/file-with-warnings.rs`
5. adjust the split until you are able to see the line numbers be replaced w/ `@` symbols (given my screen layout, this happens immediately after i launch the split)

### :ALEInfo

Expand

```vim
Current Filetype: rust
Available Linters: ['analyzer', 'cargo', 'cspell', 'rls', 'rustc']
Linter Aliases:
'analyzer' -> ['rust_analyzer']
Enabled Linters: ['analyzer']
Ignored Linters: []
Suggested Fixers:
'remove_trailing_lines' - Remove all blank lines at the end of a file.
'rustfmt' - Fix Rust files with Rustfmt.
'trim_whitespace' - Remove all trailing whitespace characters at the end of every line.

Linter Variables:
" Press Space to read :help for a setting
let g:ale_rust_analyzer_config = {}
let g:ale_rust_analyzer_executable = 'rust-analyzer'

Global Variables:
" Press Space to read :help for a setting
let g:ale_cache_executable_check_failures = v:null
let g:ale_change_sign_column_color = 0
let g:ale_command_wrapper = ''
let g:ale_completion_delay = v:null
let g:ale_completion_enabled = 0
let g:ale_completion_max_suggestions = v:null
let g:ale_disable_lsp = 'auto'
let g:ale_echo_cursor = 1
let g:ale_echo_msg_error_str = 'Error'
let g:ale_echo_msg_format = '%code: %%s'
let g:ale_echo_msg_info_str = 'Info'
let g:ale_echo_msg_warning_str = 'Warning'
let g:ale_enabled = 1
let g:ale_fix_on_save = 0
let g:ale_fixers = {'*': ['trim_whitespace', 'remove_trailing_lines']}
let g:ale_history_enabled = 1
let g:ale_info_default_mode = 'preview'
let g:ale_history_log_output = 1
let g:ale_keep_list_window_open = 0
let g:ale_lint_delay = 200
let g:ale_lint_on_enter = 1
let g:ale_lint_on_filetype_changed = 1
let g:ale_lint_on_insert_leave = 1
let g:ale_lint_on_save = 1
let g:ale_lint_on_text_changed = 'normal'
let g:ale_linter_aliases = {}
let g:ale_linters = {'rust': ['analyzer']}
let g:ale_linters_explicit = 0
let g:ale_linters_ignore = {'javascript': ['deno']}
let g:ale_list_vertical = 0
let g:ale_list_window_size = 10
let g:ale_loclist_msg_format = '%code: %%s'
let g:ale_max_buffer_history_size = 20
let g:ale_max_signs = -1
let g:ale_maximum_file_size = v:null
let g:ale_open_list = 0
let g:ale_pattern_options = v:null
let g:ale_pattern_options_enabled = v:null
let g:ale_root = {}
let g:ale_set_balloons = 1
let g:ale_set_highlights = 1
let g:ale_set_loclist = 1
let g:ale_set_quickfix = 0
let g:ale_set_signs = 1
let g:ale_sign_column_always = 0
let g:ale_sign_error = 'E'
let g:ale_sign_info = 'I'
let g:ale_sign_offset = 1000000
let g:ale_sign_style_error = 'E'
let g:ale_sign_style_warning = 'W'
let g:ale_sign_warning = 'W'
let g:ale_sign_highlight_linenrs = 0
let g:ale_type_map = {}
let g:ale_use_neovim_diagnostics_api = 0
let g:ale_use_global_executables = v:null
let g:ale_virtualtext_cursor = 'all'
let g:ale_warn_about_trailing_blank_lines = 1
let g:ale_warn_about_trailing_whitespace = 1

Command History:

(executable check - success) rust-analyzer
(started) ['/bin/zsh', '-ic', '''rust-analyzer''']
```