tests/template: Fix git_for_windows_native_path

Turns out I made a mistake in the previous commit in adapting the
conditional to use `EXEPATH` instead of `command -v cygpath`, as the
tests were still broken on regular MSYS2 and Cygwin. This change
resolves the breakage and continues to work on Git for Windows.

Author: mbland

tests/template.bats

@@ -88,8 +88,8 @@ git_for_windows_native_path() {
   local path="$1"
   local protocol="${path%%://*}"
 
-  if [[ ! "$EXEPATH" =~ \\Git$ && "$protocol" != "$path" &&
-    "$protocol" != 'file' ]]; then
+  if [[ ! "$EXEPATH" =~ \\Git$ ]] ||
+    [[ "$protocol" != "$path" && "$protocol" != 'file' ]]; then
     printf '%s' "$path"
   elif [[ "$protocol" == 'file' ]]; then
     printf 'file://'