Make non-Module generators only context allocate parameters.

test/inspector/runtime/internal-properties-expected.txt

 Checks internal properties in Runtime.getProperties output
 
 Running test: generatorFunction
 expression: (function* foo() { yield 1 })
 {
     id : <messageId>
     result : {
         internalProperties : [
             [0] : {
                 name : [[FunctionLocation]]
@@ skipping 321 matching lines @@
                     description : Object
                     subtype : internal#location
                     type : object
                     value : {
                         columnNumber : 13
                         lineNumber : 8
                         scriptId : <scriptId>
                     }
                 }
             }
-            [4] : {
-                name : [[Scopes]]
-                value : {
-                    className : Array
-                    description : Scopes[2]
-                    objectId : <objectId>
-                    subtype : internal#scopeList
-                    type : object
-                }
-            }
         ]
     }
 }
 
 Running test: generatorObjectDebuggerDisabled
 expression: gen2
 {
     id : <messageId>
     result : {
         internalProperties : [
@@ skipping 205 matching lines @@
                     className : Array
                     description : Array(1)
                     objectId : <objectId>
                     subtype : array
                     type : object
                 }
             }
         ]
     }
 }