Editor: avoid function on Object in script header

[ericoporto]

Same as #2641 but for objects. Related to #2463.

Note that after this there is no more use of function in the script header. The remaining use of function is in the templates and handlers created by the Editor.

And it's also used in this file below (I don't know if the editor use this somewhere?)

ags/Editor/AGS.Editor/Resources/__DialogScripts.asc

Line 10 in fd272e2

function _run_dialog_request (int parmtr) {

[ivan-mogilko]

"function _run_dialog_request" is a local helper function used when generating dialog scripts; not exposed to api.
AFAIK it exists purely for handling deprecated "run-script" dialog command.