fix overlooked window binding in spec files

spec/javascripts/awards_handler_spec.js

spec/javascripts/behaviors/autosize_spec.js

spec/javascripts/behaviors/quick_submit_spec.js

spec/javascripts/behaviors/requires_input_spec.js

spec/javascripts/extensions/array_spec.js.es6

spec/javascripts/extensions/jquery_spec.js

spec/javascripts/fixtures/emoji_menu.js

spec/javascripts/header_spec.js

spec/javascripts/issue_spec.js

spec/javascripts/line_highlighter_spec.js

spec/javascripts/merge_request_spec.js

spec/javascripts/merge_request_tabs_spec.js

spec/javascripts/merge_request_widget_spec.js

spec/javascripts/new_branch_spec.js

spec/javascripts/notes_spec.js

spec/javascripts/project_title_spec.js

spec/javascripts/right_sidebar_spec.js

spec/javascripts/search_autocomplete_spec.js

spec/javascripts/shortcuts_issuable_spec.js

spec/javascripts/syntax_highlight_spec.js