Multiline LSP diagnostics send to neovim's API are unwrapped

## Information

**VIM version**

```
NVIM v0.10.2
Build type: MinSizeRel
```

Operating System: Alpine Linux, Edge

## What went wrong

I'm using `vim.g.ale_use_neovim_diagnostics_api = 1`. When ALE sends diagnostics to neovim, ALE unwraps multiline diagnostics.

Some LSPs return multi-line diagnostics, and even align continuation lines to present the error in a visually clearer way. Joining lines breaks displaying of diagnostics in most interfaces.

# Screenshots

The following compare how diagnostics from both sources, rendered via `lsp_lines.nvim`.

When using neovim with its native LSP client:


When using ALE:


## Reproducing the bug

1. Enable `ale_use_neovim_diagnostics_api`
2. Open a `go` file with an error like `strings.Replace("a", "b", 0)` (note that the error returned by the LSP is multi-line, and continuation lines are deliberately aligned).

### :ALEInfo

Expand
Current Filetype: go
Available Linters: ['bingo', 'cspell', 'gobuild', 'gofmt', 'golangci-lint', 'gopls', 'gosimple', 'gotype', 'govet', 'golangserver', 'revive', 'staticcheck']
Linter Aliases:
'gobuild' -> ['go build']
'govet' -> ['go vet']
Enabled Linters: []
Ignored Linters: []
Suggested Fixers:
'gofmt' - Fix Go files with go fmt.
'gofumpt' - Fix Go files with gofumpt, a stricter go fmt.
'goimports' - Fix Go files imports with goimports.
'golangci_lint' - Fix Go files with golangci-lint.
'golines' - Fix Go file long lines with golines
'gopls' - Fix Go files with gopls.
'remove_trailing_lines' - Remove all blank lines at the end of a file.
'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_go_go_executable = 'go'
let g:ale_go_golangci_lint_executable = 'golangci-lint'
let g:ale_go_golangci_lint_options = ''
let g:ale_go_golangci_lint_package = 0
let g:ale_go_langserver_executable = 'go-langserver'
let g:ale_go_langserver_options = ''

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 = v:null
let g:ale_command_wrapper = v:null
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 = v:null
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 = {'go': ['gofmt'], 'yaml': ['prettier'], 'scss': ['prettier'], 'json': ['prettier'], 'lua': ['stylua'], 'html': ['prettier'], 'vue': ['prettier'], '*': ['remove_trailing_lines', 'trim_whitespace'], 'typescript': ['prettier'], 'sql': ['pgformatter'], 'markdown': ['prettier']}
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 = v:null
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 = {'markdown': ['proselint', 'vale'], 'apkbuild': ['apkbuild_lint'], 'mail': ['proselint']}
let g:ale_linters_explicit = 1
let g:ale_linters_ignore = {}
let g:ale_list_vertical = v:null
let g:ale_list_window_size = v:null
let g:ale_loclist_msg_format = v:null
let g:ale_max_buffer_history_size = v:null
let g:ale_max_signs = v:null
let g:ale_maximum_file_size = v:null
let g:ale_open_list = v:null
let g:ale_pattern_options = v:null
let g:ale_pattern_options_enabled = v:null
let g:ale_root = {}
let g:ale_set_balloons = 0
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 = v:null
let g:ale_sign_error = v:null
let g:ale_sign_info = v:null
let g:ale_sign_offset = v:null
let g:ale_sign_style_error = v:null
let g:ale_sign_style_warning = v:null
let g:ale_sign_warning = v:null
let g:ale_sign_highlight_linenrs = v:null
let g:ale_type_map = v:null
let g:ale_use_neovim_diagnostics_api = 1
let g:ale_use_global_executables = v:null
let g:ale_virtualtext_cursor = 'disabled'
let g:ale_warn_about_trailing_blank_lines = 1
let g:ale_warn_about_trailing_whitespace = 1

Command History: