Python Editor master bug

• #20607 (closed): Tab length
• #20606: Improve Programmable Filter integration
• #20605 (closed): Pasting into the editor shange the scrolling
• #20624 (closed): Run script directly from editor
• #20626 (closed): Modifying a script doesn't enable apply
• #21005 (closed): Extra tabs on initial open

MacOS Specific:

• #20571 (closed): tab issues
• #20594 (closed): select cells/points trace failures
• #20975 (closed): Programmable Filter/Source script does not appear in editor when popout editor button clicked