Fixed the save button in `ThreadSettingsGeneralTab` which was previously not staying disabled if the user had selected another color and then changed their selection back to the current thread color (making no other changes in the thread settings) (see before/after video in Test Plan).
Related Linear issue with full context [[ https://linear.app/comm/issue/ENG-1090/colorselector-save-button-on-web-doesnt-stay-disabled-after-clicking | here ]].