Enable partial clone by default (#18195)

- Enable partial clones(which are by default disabled from git) by
default, unless configured otherwise.
- Resolves #18190

custom/conf/app.example.ini

@@ -592,6 +592,8 @@ PATH =
 ;LARGE_OBJECT_THRESHOLD = 1048576
 ;; Set to true to forcibly set core.protectNTFS=false
 ;DISABLE_CORE_PROTECT_NTFS=false
+;; Disable the usage of using partial clones for git.
+;DISABLE_PARTIAL_CLONE = false
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
@@ -790,7 +792,7 @@ PATH =
 ;PREFERRED_LICENSES = Apache License 2.0,MIT License
 ;;
 ;; Disable the ability to interact with repositories using the HTTP protocol
-;;DISABLE_HTTP_GIT = false
+;DISABLE_HTTP_GIT = false
 ;;
 ;; Value for Access-Control-Allow-Origin header, default is not to present
 ;; WARNING: This may be harmful to your website if you do not give it a right value.