Treat lts, current, and latest as synonyms using releases API

All three version types (latest, lts, current) now use the GitHub releases
API to get the actual latest release, ensuring they all get properly
released versions instead of potentially unreleased development tags.

Co-authored-by: markphip <933108+markphip@users.noreply.github.com>

Author: Copilot

src/microsoft-git/install.sh

@@ -44,19 +44,15 @@ fi
 # Partial version matching
 if [ "$(echo "${GIT_VERSION}" | grep -o '\.' | wc -l)" != "2" ]; then
     requested_version="${GIT_VERSION}"
-    if [ "${requested_version}" = "latest" ]; then
-        # For latest, use the releases API to get the actual latest release
+    if [ "${requested_version}" = "latest" ] || [ "${requested_version}" = "lts" ] || [ "${requested_version}" = "current" ]; then
+        # For latest, lts, and current, use the releases API to get the actual latest release
         GIT_VERSION="$(curl -sSL -H "Accept: application/vnd.github.v3+json" "https://api.github.com/repos/microsoft/git/releases/latest" | grep -oP '"tag_name":\s*"v\K[0-9]+\.[0-9]+\.[0-9]+\.vfs\.[0-9]+\.[0-9]+"' | tr -d '"')"
     else
-        # For other cases (lts, current, partial versions), use the existing tags logic
+        # For partial versions, use the existing tags logic
         version_list="$(curl -sSL -H "Accept: application/vnd.github.v3+json" "https://api.github.com/repos/microsoft/git/tags?per_page=100" | grep -oP '"name":\s*"v\K[0-9]+\.[0-9]+\.[0-9]+\.vfs\.[0-9]+\.[0-9]+"' | tr -d '"' | sort -rV)"
-        if [ "${requested_version}" = "lts" ] || [ "${requested_version}" = "current" ]; then
-            GIT_VERSION="$(echo "${version_list}" | head -n 1)"
-        else
-            set +e
-            GIT_VERSION="$(echo "${version_list}" | grep -E -m 1 "^${requested_version//./\\.}([\\.\\s]|$)")"
-            set -e
-        fi
+        set +e
+        GIT_VERSION="$(echo "${version_list}" | grep -E -m 1 "^${requested_version//./\\.}([\\.\\s]|$)")"
+        set -e
         if [ -z "${GIT_VERSION}" ] || ! echo "${version_list}" | grep "^${GIT_VERSION//./\\.}$" > /dev/null 2>&1; then
             echo "Invalid git version: ${requested_version}" >&2
             exit 1