Fix fingerprint setup crash when libfprint-git is installed

[mounis-bhat]

Issue

The omarchy-pkg-present libfprint check returns true if libfprint-git is installed because it "provides" libfprint.

The script then tries to remove the literal libfprint package with pacman -Rdd. This triggers a sudo prompt for existing fingerprint users, fails with a target not found error, and abruptly crashes the script due to set -e.

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Fix

Replaced the check with pacman -Qq | grep -Fxq "libfprint" to ensure it only attempts removal if the exact, literal libfprint package is installed.

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