fix(ui.lua): pcall prevents spectre from crashing on bad hl group

[Zeioth]

This is a hot-fix that prevent spectre from crashing when a hl group fail to be generated in some files

Pre-fix: spectre crashes

Post-fix: spectre fails gracefuly

More info

I've just added a pcall so it doesn't crash. But if someone has time and energy to go into this block of code and see what's going on, feel free. IDK if it's worth it as the only side effect of this issue is that some result rows will show broken colors in the files affected by this (which idk how often happens or why).

We can open an issue and further research it if you want.

[Zeioth]

This is the file, in case someone wants to try to repro:

02-program-aliases

# PROGRAM VARIABLES
# ============================================================================

# File edition
$tui_file_browser = TERMCMD="foot -a 'scratchpad'" $term_scratch_standalone -T 'Ranger - File Manager' ranger
$gui_file_browser = thunar

$vim_editor  = $term -T 'VIM - Editor'  vim -S ~/.vim_runtime/temp_dirs/sessions/meta-editor.vim
$vim_backlog = $term -T 'VIM - Backlog' vim -S ~/.vim_runtime/temp_dirs/sessions/meta-backlogs.vim
$vim         = $term -T 'VIM - Editor'  vim

# No need no use sessions anymore, we have an automated session manager
$nvim         = $term -T 'NVIM - Editor'  nvim

# system aliases
$calc            = wofi-calc
$weather         = $term_scratch -T 'Weather'              weather
$backup_to_cloud = $term_scratch -T 'Backup to cloud'      ~/tweaks/sync-backup-to-cloud.sh
$update_packages = $term_scratch -T 'Updating packages...' update-packages
$update_mirrors  = $term_scratch -T "Updating mirrors..."  update-mirrors
$chatgpt         = $term_scratch -T "ChatGPT"              chatgpt
$lcg             = $term_scratch -T "Clg"                  clg
$help_keyboard   = $term_scratch -T 'CRKBD manual' nvim -m ~/workspaces/git-forks/keyboards/qmk_firmware/keyboards/crkbd/keymaps/zeioth_trackball_right/README.md
$help_nvim       = $term_scratch -T 'NVIM Manual' nvim -m ~/workspaces/git-forks/keyboards/qmk_firmware/keyboards/crkbd/keymaps/zeioth_trackball_right/VIM-MANUAL.md

# swayr aliases
$swayr-wintab    = env RUST_BACKTRACE=1 swayr switch-workspace-or-window >> /tmp/swayr.log 2>&1
$swayr-xkill     = env RUST_BACKTRACE=1 swayr quit-window -k > /tmp/swayr.log 2>&1
$swayr-next      = env RUST_BACKTRACE=1 swayr next-window >> /tmp/swayr.log 2>&2
$swayr-prev      = env RUST_BACKTRACE=1 swayr prev-window >> /tmp/swayr.log 2>&2
$swayrd          = env RUST_BACKTRACE=1 swayrd > /tmp/swayrd.log 2>&1"

# extra system utils
$corectrl = corectrl

[EpsilonKu]

Ok, will look.