Pass context in beforeDelete, afterDelete, beforeFind and Parse.Cloud.run. (#6666)

* add context for following hooks.
1. beforeDelete
2. afterDelete
3. beforeFind
4. Cloud Function

* revert un-necessary code change.

* fix: failing test cases.

* fix: failing test cases.

* fix: failing test cases.

* fix: failing test cases.

* fix: failing test cases.

* fix: failing test cases.

* fix: failing test cases.

* review changes

* revert changes

* revert changes

* review changes

* lint changes

* review changes

src/RestWrite.js

@@ -32,6 +32,7 @@ function RestWrite(
   data,
   originalData,
   clientSDK,
+  context,
   action
 ) {
   if (auth.isReadOnly) {
@@ -46,18 +47,12 @@ function RestWrite(
   this.clientSDK = clientSDK;
   this.storage = {};
   this.runOptions = {};
-  this.context = {};
+  this.context = context || {};
 
   if (action) {
     this.runOptions.action = action;
   }
 
-  // Parse context
-  if (data._context && data._context instanceof Object) {
-    this.context = data._context;
-    delete data._context;
-  }
-
   if (!query) {
     if (this.config.allowCustomObjectId) {
       if (